My guess: a contrarian attitude. Though do not underestimate the effect of concentrated, sheer selfishness. They can't get to see content that they used to, and despite not creating it themselves, or doing ANYTHING other than consuming it, they feel entitled to access it, as if it were "theirs". So if a user chooses to delete their own, personal content, then you should consider "their" feelings (the whiners I mean, over & above that of the content creator). In short, you are thinking of their responses as containing "logic", and attempting to rationally process it as such, but it is not! Instead it is emotional, venting language. It's similar to the "she's asking for it" thinking - in that NO SHE'S DEFINITELY NOT, but that doesn't matter to the person saying that...

Also, the person offering it could legit & literally be an actual child, but whether that's true physically or merely emotionally, it helps if you think of it that way.

I should add that some subs - probably very few but I don't know the details - have legit complaints lobbied against them: like they did a poll, the VAST majority of their users said no, the mod team also unanimously said NO among respondents, but then a senior mod popped in and YES blacked out the entire sub anyway. So the truth is sometimes complicated by nuances like that. I've heard justification types of excuses blowing such real events out of proportion as if that is the only type of scenario that ever occurs. (Though again, for those with a... loose affiliation with facts, such details are only tools to bludgeon your opponents with, rather than food for thoughtful consideration. It is entirely up to you to not be swayed by thus though - they aren't offering to not make such comments in the first place, so you have to choose how you will deal with them.)