Sargon wasn't banned because of the pictures, but because the person that he sent to claimed to feel that he was being harassed.
That same person would later in a tweet say that he didn't actually care about the gay porn, since he was gay himself, and just wanted to ban Sargon.

I couldn't care less about Sargon, but Jontron is catching a lot of shit, I hope he's holding up well enough