We have had priests who have encouraged clapping after Mass and they most usually always say, “lets applaud the choir” or “let’s applaud the musicians” and sometimes “lets applaud the altar servers”. Not too long ago, “applaud yourself for saying the rosary”. The other night at Christmas Eve we had a beautiful Mass and then at the end, “let’s applaud the choir for giving us beautiful music”.
As others have said if the musicians, or choir are there to get applause from the parishioners rather than singing to God, they are up there singing for the wrong reasons.
It seems like we have gotten so far away from understanding that Mass is the sacrifice, we have come to see it as needing to be entertaining, so when we like the music, we feel we need to applaud. Except for probably the videos of those applauding the elevation because of cultural reason, we are not giving praise to God by applauding after Mass.
Sorry, but IMHO, clapping after Mass is definitely applauding the musicians and should not be done.