He's a games developer and an ex-member of the cracker scene. His technical chops are stronger than many people here.
Care to share them?
I can't say much about his videos linked in another post (about PS1 shimmering) as I haven't touched graphics programming / APIs (beyond coding a very basic 3d rendering engine which ran on the CPU).
After reading some of the linked discussions - yes he does appear to have posted some bullshit. That doesn't make all of his content bullshit though, and doesn't make him "non technical". The fact that he has shipped several games on constrained platforms is proof that he is technical.
He does now go into the same box as I put 99.9% of content creators in - entertaining but don't trust them on the details.