It's not being banned.
So if China has already made it clear it considers a TikTok sale illegal, this is a ban.
That being said, you don't get Nancy Pelosi and Marjorie Taylor Greene on the same side unless there is some serious fire behind all of the smoke. My guess is everyone who has seen the classified info agrees this ban is too critical to even play games with it.
All you need to convince American politicians of anything is jingling keys and cash. Plus MTG opposed the original TikTok bill, they only voted in favor when it was packed together with sending money for Israel.