I didn't see that name in that post so I don't see what you're talking about (and it seems highly inflammatory, toxic, misinformed, and off topic). But I suspect the concern for DHH is not so much race as culture.

This is the "culture" demo DHH is referring to https://www.independent.co.uk/news/uk/home-news/tommy-robins...

"Tommy Robinson" is the nom de guerre that the fascist Yaxley-Lennon uses since it sounds more working class.