Yes, of course he is a racist. Not too long ago he went on a 20 minute rant about “DEI” (which is a racist code word for people of color) and the Debian Project. He is also anti-lgbtqia, sexist, and ablist. He consistently deadnames and misgenders trans people. He is an all around bigoted asshole who does nothing good in this world and spends the majority of his existence spreading hate and misinformation.
Sources:
https://lunduke.substack.com/p/debian-linux-doesnt-want-straight
https://lunduke.substack.com/p/elementary-os-is-imploding?s=r
Edit: typo





Whenever I see a new project trying to modernize Xorg, my first question is whether it’s actually about the code or just another protest/spite project. We’ve already seen how XLibre is less about display servers and more about a weird crossover of technical incompetence and fringe politics (championed by people like Lunduke). Is Phoenix actually a serious technical effort, or is it just the latest attempt to build a sanctuary for people who were kicked out of the Wayland and Xorg dev circles?