> There is nothing that special about bioweapons.

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:

https://en.wikipedia.org/wiki/Biological_Weapons_Convention