They made a sock puppet account, in order to make an accusation at someone - and deliberately obscured the name of the person they were insulting. That’s a kind of “dog-whistle” technique.
Either they are genuinely scared of speaking out against this sillysaurusx person, or they know it’s an unfair accusation and they wouldn’t say it openly.
It just struck me as a really out of place comment, a very odd way to act. And embedding dang’s username in their sock puppet account name?