Trump proposed the TikTok ban and even tried to enforce it via executive action during his first term. He also said he would put Zuckerberg in prison and attacked big tech companies for almost a decade at this point. The reason Silicon Valley is aligning themselves with Trump’s administration is for strategic reasons. If there are any ideological reasons I doubt these would stand the test of pendulum shifts.
Republican speaker Johnson also still wants to enforce the ban and only considers Trump’s interference as a delay to have TikTok sold to a US entity (which the bill explicitly allows as an alternative): https://www.nbcnews.com/politics/congress/speaker-johnson-2-...