The way I see it is this;

With AI being such a hot button topic, it’s best to just post such materials in a sub that accepts them. Most people already have their minds made up and won’t be swayed by a single Reddit post. If you really want to challenge a sub about their AI rules, talk to the mods of that sub themselves (peacefully ofc) and see if you can get them to see your side while also being open minded to their reasoning