You sound unfamiliar with him. Lunduke occupies the "Luke Smith" valley of pundits who do not actually contribute to Open Source. Even DHH actually does something, Lunduke's claim to fame is politicizing technology and amplifying an unnecessary culture war. There is no open discussion surrounding how much he contributes, he is a heckler and does nothing else. His bus factor has long since passed a negative quotient.
Now obviously that does not excuse violence against his person. But there is no pretending that he's not controversial; that's the name he's made for himself. It's one that he can feel very comfortable with online, but much less so in a place like America where firearms laws are so relaxed and politically motivated violence never leaves the news cycle.
It's a tragic status-quo for America, but Lunduke is the last person I'll feel sorry for. When the mob comes for him, it's because he was goading them from the sideline. He'd have done well for himself if he put his passion into something productive like Kling or Eich did.