What is a mombot?
Either a Japanese housewife who likes videogames, or a Brazilian man claiming to be a Japanese housewife, depending on who you ask.
They were banned (assumed at the time to be as part of the regular general reaping of non-leftist accounts), and the fact that they've resurrected seems to be indicating a policy change at Twitter.
I think this is pretty unsubstantiated.
In fact they make no mention of hate, vitriol or false information, where is this all coming from?