I think the lab leak theory is wrong, but even if it was true I no idea how that should change anything.
Then, more practically, if it was an accidental leak, it would mean that a much more detailed assessment needs to be performed of if what they were doing should be allowed elsewhere, if handling and disinfection methods need updating etc.
Might also lead to legislation regarding the responsibilities of people hiring these sorts of labs (eg even if China refuses to take responsibility and update its own laws on the matter, other countries could ban their own researchers from contracting work out to labs which don't meet certain standards).
Or because people who spoke up about received every kind of pushback - firing, demotion, smears, even death threats.
That Trump posed it as a likelihood means nothing in comparison to millions of posts getting flagged, shadowbanned, repressed and completely wiped. You get that, right?