Mmmmm, no, not really. It's a pretty simple point about how doing this job can come with various conditions that might "limit your freedom of expression", you still have to do them to keep doing the job. If you took a jersey tuck penalty every night because it's your right to express yourself, your team would be tired of you eventually. Same should probably eventually go for the intolerant, personally, and if you can't handle wearing a rainbow for like 10 minutes you should adjust your priorities.
That's got some religious association you're not really in a place to appropriate. That said, if the NHL wanted to wear jerseys that said "NHL Against Antisemitism" and you wouldn't wear that you'd be doing the same thing and under the same line of questioning. The equipment managers weren't passing out mesh tanktops and buttplugs, just a shirt that says "we respect you as humans"