There is nothing that special about bioweapons, there are plenty of bacteria that will kill you just fine. Americans even have free samples on their salad.
The reason that madmen and terrorists choose kinetic weapons is because the knowledge and materials are more readily available... of and also that even terrorists are likely aware that their own people would suffer. As the knowledge and tools for playing with CRISPR-style biological legos become more widespread, we come closer to the Great Filter, where one person could kill billions.
Even our normal mad leaders have agreed that bioweapons cannot be allowed:
The issue is non-state actors. That moves it from a ~hunderd to many billions.
BTW, according to my FOSS religious beliefs, I should be making the other side of the argument. This whole thing is tough.
"at home" bioweapon panic has been around since crispr and rna synthesis got available to amateurs.
I really want open weight models. Otherwise, I see no other path outside of the labs eventually not being allowed to/wanting to release model access at all, and instead just eating all the verticals. That would be a horrible near-term business outcome.