Firstly operating in the EU doesn't mean your entire global operation has to conform to EU regulations. Unless the user in question is in the EU, I think they would be hard pressed to apply fines.

But Reddit is a bit off the rails right now, I mean it is clear they aren't making good or smart choices, so even if this is solely bound to the confines of the EU, I don't think they are going to follow the rules, until they are made to.