The fact of the matter is this. Our opinions of the subject are largely irrelevant (other than the ability to subtract our $$ from the equation). It is up to todays players to police the game & determine what they will & will not tolerate. The way I did it, the way you did it or the way we think it should be currently done is not really a factor in how it is going to be done, other than how we may influence our own players.
I, personally, thought Bautista's bat flip was chicken #* it. Matt Bush, who drilled him, obviously agreed. Bautista took offense to this with the tackle slide into Odor who tried to decapitate him with a submarine throw which had absolutely no intent to get to first base. Bautista took offense to that & then bowed up & promptly got his ass kicked. It is old school baseball. Nasty, mean, self policing & with passion. I can promise you Bautista will think 2X before the next flip. He may still do it, but he will definitely reconsider.
Harper (let's make baseball fun again but I never smile on the field) obviously has a different take on things as do many of the new wave. Several others of the new generation were raised to "act like you have been there & respect the game," which is my personal preference but again, is not really a factor. I personally, like the old school rivalries when the Yankees & Red Sox wanted to demolish each other & there was absolutely no possibility of high fives & group hugs with opposing players in the outfield pregame.