I really can't agree with anyone that doesn't block linuxrocks for the sake of "controversial discussion".
That's not what Lunduke is about. They're just straight transphobic
https://linuxrocks.online/@lunduke/112893334455405021
And here's an admin openly admitting that they'll platform bigots and transphobes.
https://linuxrocks.online/@yisraeldov/112885717416855799
https://linuxrocks.online/@yisraeldov/112891528433197264
Of course every admin is free to run their instance as they see fit. However, I would strongly consider your userbase and how these people could effect them.