To get the obvious reason out the way. Minimalism. The minimalism style is getting rid of all creativity jerseys have and replacing them with basic color blocking and large font faces.
Some teams have recently made jerseys that became classics. The only problem is the team getting rid of them after wearing them for a short period of time
One thing I noticed about newer NBA jerseys is that they’re more centric to the city the team plays in compared to the teams name like how they used to be
Example using the Hawks:
Old: jersey was centered around the Hawk
New: the jerseys are centered to Atlanta