We're not anywhere near anything that has anything in common with human level intelligence, or poses any threat.

The only possible cause for support of legislation like this is either a completely absence of understanding of what the technology is combined with treating Hollywood as reality (the layperson and probably most legislators involved in this), or an aggressive market control attempt through regulatory capture by big tech. If you understand where we are and what paths we have forward, it's very clear that there's only harm that this can do.