MTG didn't entirely lose in this whole debacle, either. She now gets to point to Johnson and say "See, he's with the Democrats". That'll be super useful to her in campaigns and all that kind of shit.
I doubt that was her intention -- she doesn't strike me as a person having intentions beyond the most superficial ones -- but she's definitely enough of an opportunist to make hay with it now that it's worked out this way.
The dems backing Johnson was a cynical move. It was a nasty piece of business. But that deal was to get aid to Ukraine, and that's a deal I'll take. And hey point, it may be the end of Johnson's career, getting all those democratic "votes of confidence". Unfortunately, his replacement would doubtless be an even more creepy little gremlin.