I wondered about that too once you mentioned it and remembered that he recently mentioned that he live streams his compositions on YouTube, although in private videos, and that he made a few public but unlisted with a list on his server. I'm not sure he wants the list easily searchable but if you follow him on Bandcamp and scroll down to June 15th, 2022, there is a link:

https://masterbootrecord.bandcamp.com/community

I looked for a bit and no, although he does use a lot of short notes. Most of the complexity is in the samples (which I guess is the usual way :) ). Or the instruments I should say, I'm guessing those are primarily sample based. He uses Cubase 8, Massive VST, and Superior Drummer 3.