The same kind of arguments as for the bat cave theory.
Anyway, your argument here seems circular: Academics must not take the lab leak theory seriously, because only non-academics discuss it, because academics don't take the lab leak theory seriously.
I didn't say non-academic, I explicitly said "crazy people".
The lab theory will be taken seriously when there will be serious evidences. If they exist they will come out. Believing in conspiracies because enough people believe in them without any actual, tangible, verifiable evidence is worrying.
The option "intensive farming+poverty+open market full of crap+random bats, all in extremely unsanitary conditions" seems a way better theory, needing way less evidence (also hard to acquire in this case), if you compare it to the random lab doing experiments full of incompetent researchers.
Anyway, your argument here seems circular: Academics must not take the lab leak theory seriously, because only non-academics discuss it, because academics don't take the lab leak theory seriously.