This is just nonsense. Plenty of intelligent and capable people are perfectly friendly and non-toxic.
Your philosophy demonstrably doesn't work. Its failures are so obvious that even Linus Torvalds, who people always seem to bring up in these conversations, has repudiated it[0].
> And, in fact, some people contribute a _negative_ amount overall. Which is to say, the project is better off without their participation.
This is true. Toxic people aren't worth the effort to keep them in, no matter how good their skilled contributions are. There can and should be a way to remove them.
[0] https://arstechnica.com/gadgets/2018/09/linus-torvalds-apolo...