There’s a Class 100 semiconductor cleanroom inside this backyard shed.

https://sh.itjust.works/post/56412230

Belgian's Epstein, Alleged Gov't Coverup, Even The Prosecutor Committed "Suicide" - sh.itjust.works

There are plenty of older documentaries, mostly mainstream posted on Youtube about this case. Here are a couple to view, one by an influencer, the other a mainstream media with interviews, dubbed in English. The BELGIAN DEMON - Marc Dutroux [https://inv.nadeko.net/watch?v=ftqnVksXjiE] The Marc Dutroux Pedophile Ring: Government Officials, Murder & Satanic Sacrifices (VERY DISTURBING) [https://inv.nadeko.net/watch?v=aGGMoigD_fc]

There was someone who wrote up a bootstrapping guide for technology assuming an apocalypse sent us back to sticks and stones. I think that guide went much further back on the level of lithography you could meaningfully get to while restarting tech.

I am curious what size features this guy can create in his lab.

I’m guessing he can’t really do much of a chip per se. Sounds more like he can do only base components.
There are other YouTubers who have managed to make meaningful chips (on the order of 1000 transistors) out of basically a garage setup with salvaged and/or improvised equipment. I would be shocked if this guy can’t do better than that with his much more sophisticated setup.