1st > this is rule not "game etiquette" counting will happend only on turn of person who request counting (and by other way in ultimate count to in case of bare king)
2nd > I said that are 2 types of counting fist one can be requested by player and 2nd one when one player left only bare king and no unpromoted pawn left, counting will start and no need to request counting.
3rd > Even rule suggest that person who in danger of losing can count in fact there are no rule preven person who about to winning start counting then before 64 move count is reached, he forfeit it. Yes but that will be seen as "bad player"
But yes sometime even stronger player can request counting to find a draw because he is risk of losing by run out of time as I ever does one time before. I play in 20+0 game and I have king+rook+bishop vs king+rook which is draw endgame. But she have a lot more time than me and I in risk of losing by run out of time so I request counting to find a draw, because she still have rook left as rook is suffecient to checkmate so if I run out of time I will lose not draw. It make seem counterintunitive but rule allow me to do as she will win me on tiome if I not request counting as Makruk doesn't have 50 move rule as Chess does.
4th > Yes, it's vague but in competitive game when someone request counting he must announce it to Referee too. And I don't think so that referee will allow person with rook to start counting as person with knight can no longer win as kinght aren't sufficient to checkmate (against bare king) As person with rook can't lose anymore even if he is run out of time because opponent didn't have enough material to force ckeckmate in bare kind situation.
5th > bare king counting is different from 64-move counting as it will happended without need to request counting. It's no need to consider who are in risk of losing because now we have clear term that who in risk of losing.
6th > Yes, but if you forgot to declare to stop counting before mate opponent then game is end in draw by counting. But yes if he can't see it, he is a very poor player.
Note" Material that consider sufficient to checkmate in bare king situation by official rule are as following
1st > 3 queens that all queen not on the same colour squares.
2nd > queen + bishop
3rd > queen + knight
4th > 2 bishops
5th > bishop + knight
6th > rook
for "queen + knight" endgame although theoretically draw with best play from both side in most positions but some positions are possible ot force win with mostly involve king in corner that same with colour of queen and can't get out, so it still count as sufficient to checkmate by official rule.
Let's me review each paragraph.
1st > this is rule not "game etiquette" counting will happend only on turn of person who request counting (and by other way in ultimate count to in case of bare king)
2nd > I said that are 2 types of counting fist one can be requested by player and 2nd one when one player left only bare king and no unpromoted pawn left, counting will start and no need to request counting.
3rd > Even rule suggest that person who in danger of losing can count in fact there are no rule preven person who about to winning start counting then before 64 move count is reached, he forfeit it. Yes but that will be seen as "bad player"
But yes sometime even stronger player can request counting to find a draw because he is risk of losing by run out of time as I ever does one time before. I play in 20+0 game and I have king+rook+bishop vs king+rook which is draw endgame. But she have a lot more time than me and I in risk of losing by run out of time so I request counting to find a draw, because she still have rook left as rook is suffecient to checkmate so if I run out of time I will lose not draw. It make seem counterintunitive but rule allow me to do as she will win me on tiome if I not request counting as Makruk doesn't have 50 move rule as Chess does.
4th > Yes, it's vague but in competitive game when someone request counting he must announce it to Referee too. And I don't think so that referee will allow person with rook to start counting as person with knight can no longer win as kinght aren't sufficient to checkmate (against bare king) As person with rook can't lose anymore even if he is run out of time because opponent didn't have enough material to force ckeckmate in bare kind situation.
5th > bare king counting is different from 64-move counting as it will happended without need to request counting. It's no need to consider who are in risk of losing because now we have clear term that who in risk of losing.
6th > Yes, but if you forgot to declare to stop counting before mate opponent then game is end in draw by counting. But yes if he can't see it, he is a very poor player.
Note" Material that consider sufficient to checkmate in bare king situation by official rule are as following
1st > 3 queens that all queen not on the same colour squares. 2nd > queen + bishop 3rd > queen + knight 4th > 2 bishops 5th > bishop + knight 6th > rook
for "queen + knight" endgame although theoretically draw with best play from both side in most positions but some positions are possible ot force win with mostly involve king in corner that same with colour of queen and can't get out, so it still count as sufficient to checkmate by official rule.