Everything McCarthy did, he did to please Republicans. Most Republicans privately don't want a shutdown, they know it's electoral poison for the GOP. Especially for Republicans in vulnerable districts, like Boebert (ever wonder why she voted to keep government open? Now you know).

Likewise, apart from a few loudmouths Republicans generally want Ukraine aid - in fact McConnell insists on it - and that's the only reason McCarthy included it.

McCarthy wasn't doing Democrats any favors. On the contrary, he backstabbed Democrats when he thought he could get away with it. No reason for Democrats to support someone like that.

Johnson isn't deaf, Republicans will privately make the same demands to him that they did to McCarthy, he has to do what they want just like McCarthy did, and Democrats know it. Hopefully with less backstabbing this time.