Ok, so I know it's frustrating, but I don't see why everyone gets so worked up about unlocked NFT groups/pets (even though the rules say ranting about it is spam). Just find someone else to trade with and move on. Yes, it's pretty much considered common decency to lock those groups, and I personally have all my groups locked except for trade groups, but it's not a requirement. If someone is proud of their pet and wants to show off their ownership somewhere other than their signature or a thread, that's their right, whether I agree with it or not.
And besides, maybe there's another reason those groups are unlocked.
For instance, I've considered unlocking my groups so that people can see what I have to offer for offsite trades, but the pets in those groups would not be available for CS trades. And before someone says, "Well, you could just say so in your rules/group names," a majority of non-swap trades that I've received in the past few months prove that people aren't really reading my rules anyway. Maybe I'll just give it a shot anyway, but I'm sort of dreading all the trades I'd get from people who didn't check my rules first.