In my deep dive into who's who in modern white-nationalism/Christian nationalism movement, I've discovered that a disproportionate number of them are incels.
I probably should have expected that.
For what it's worth, Elon Musk interacts with "@ramzpaul" on Twitter.
"@ramzpaul" (i.e, Paul Ray Ramsey) is a well known and prolific white nationalist. He is famous for suggesting:
"If I were the EU president, I would appoint Breivik as head of the refugee commission. We need some creative solutions."
Anders Brevik is a famous mass murderer.
In the single very public interaction, Musk has probably done more to magnify and attract attention to Paul Ramsey's odious writings than anyone else in the last 20 years.
A brief summary of Paul Ray Ramsey's activity:
https://www.splcenter.org/fighting-hate/extremist-files/individual/paul-ray-ramsey
Twitter has a straight-forward way to avoid recommending and amplifying blatant white nationalist content.
They just choose not to.