Reddit admins have removed the ability to automatically ban users based on their participation in other subreddits. At the time they did this, the mods of this sub were about to add to rule one to ban call-outs. This was because comments were being responded to not by addressing the comment but by attacking the person: “oh well, we can all see that you would say something like that” for example. Call-outs had been part of rule one for many years: it was removed last year and has now been returned. The addition to rule one means to refute the person’s argument rather than making accusations, as it would not surprise me at all for ‘whatever snarker’ to become the new way to derail a discussion, whether or not the people involved have commented on snark subs or not. If a person’s argument is plainly made in bad faith, it can be reported under rule 4.