They won't. No company will, I think the best quote I've heard this week is from the proton CEO on the Decoder podcast.

"No company is going to jail for you."

If vibe code is of questionable legality, then the best thing to do is to remain guarded until its legal standing is determined. It is simply an added bonus that it prevents slop that consumes data on servers for projects that nobody cares about enough to not have vibe coded.