I believe 'behavior' implies that despite no player info provided on the Pokémon journal that both the Pokémon character and Colette are played by the same person. Which would mean that he's been asked more than once to warn for his more taboo kinks and would rather delete once and hope our goldfish brains forget than actually own up to the fact that he's refusing to do so on purpose.

I'm going to put on a tinfoil hat here and say that because he deletes and doesn't repost with a warning that tricking, catching people off guard, or making them uncomfortable is part of the draw for him.