If you focus on how everything could be weaponized you are a short sighted paranoid a skip and a hop away from fascism. Even tyrants aren't stupid enough to ban all hammers.
How about stopping the idiotic tool blaming and blaming the bad actors?
Where did I say they should focus on how it could be weaponized? I'm saying they never seemed to have even considered it. And that's a charitable take; they could very well have considered it and decided it wasn't worth their worry.
It's all in balance. Bad actors are responsible. But systems designers have a responsibility too. If you optimize a system for something (e.g., engagement), that's a reflection of your values. We're seeing the ugly consequences of Facebook's values.
How about stopping the idiotic tool blaming and blaming the bad actors?