To my understanding, the thread asks "Hey what happened to those mugen computers that are literal viruses that destroy your computer?"

To which an obvious answer I think should be obvious to every single person ever: "We don't use those anymore and those that do don't talk about it and we sorta stopped uploading those kinds of mugen characters on the account of, you know, they destroy your computer"

Foreman grills is basically asking here they can download a virus from.