This just seems to be the way he operates tbh, and while it could be chalked up to "the guy thinks removing the offending material and not acknowledging it further constitutes contrition", boy it sure is interesting how difficult it makes it for people (trans women) who want to warn others about his pattern of behavior bc they instantly run up against the wall of people asking them for evidence and because the evidence has all been deleted and very few trans women actually wind up being the types to obsessively catalogue screenshots of this kind of stuff, so its easy for people who don't value the opinions trans women to dismiss it as some nebulous crowd that's trying to slander him for "exposing homestuck's bad behavior"