Unfortunate, but from a strictly “let’s avoid as many future problems as possible” perspective, I guess they have to do this.
If you allow players to support causes on their on-broadcast gear (even ones that nobody disagrees with) then you obviously have to either 1) allow literally anything, or 2) put yourself in the position to pick and choose what’s allowed. Obviously the former would never be allowed for a million reasons, but the latter could lead to massive headaches as well.
“You let ___ support ___ so why can’t I support ___”?! Then they throw a fit, the fans who agree with them have a tantrum, and you’re in another stupid PR thing again.
It’s much easier to just say no to everything and avoid problems. I’m surprised they’re still allowed to have custom goalie masks at all.