OP it’s not difficult at all, you’re just doing it wrong. Keep the fingerprint blocking browser but put it on a proxy or VPN network to remove IP address associations, or to just use Tor.
Tor is simpler and has redundancies and features that make tracking incredibly difficult, not impossible (don’t use it to commit crimes) but essentially impossible for someone like Reddit. Funnily enough they actually indirectly endorse this since they actually have their own onion site, which is hilarious but also convenient.
As for why they do it that way, I’m not really sure. The idea of “ban evasion” policies seems pretty laughable in my opinion more like they’re asking nicely not to do it. It’s even more laughable since they handed the bypass tools to us on a silver platter by allowing us to access Reddit without even touching an exit node via their onion site. It’s really strange of them.
Before anyone tries to argue that they can’t be a bigot because they’re NonBinary, just keep in mind that transmedicalists are openly and directly transphobic despite being transgender themselves. Just because this person is NonBinary that doesn’t make them not a hate-filled bigot, they still indeed are one, and in a way it’s actually worse because they’ll just say people are being transphobic or enbyphobic towards them when people try to call them out, which ends up being harmful because they’re calling things that aren’t transphobic transphobic. That reflects negatively on trans people and takes away from the ability to call out actual transphobia.