There's always been initiation for new players, especially freshman. I think the tolerance for mean spirited razzing is mostly a thing of the past, but fun humilaiton is not leaving baseball anytime soon (thankfully). My son had to use a Pokemon backpack his rookie season in the MLB - all in good spirit and a right of passage.
If a freshman made the varsity squad in a neighboring HS the team controlled the walkup song (I recall the Barbie song for some young stud). It was hilarious...
I'm sure there can be bad chemistry situations that need to be addressed, but to me most of the time anyone that thinks this is happening because they're competing for someone's position, might have the wrong attitude.