This seems like a valid position to me. It’s extreme, I don’t agree with it, and I think people with such positions should be encouraged to be more tolerant, but it’s a valid position to hold in the public space nonetheless.
I don’t think the problem is people holding these positions - outrage will always exist if you allow crowds to converse freely, which is easy on the internet - but that institutions like universities instead see the outrage as an excuse to fire people. The institutions ultimately make the choices that alter people’s careers, not the crowd. Universities and companies should do more to stand up for tolerance of opinions. If the crowds themselves are viewed as the problem, then I fear for the future of free communication on the internet.