I cannot leave a comment of bedroom producers go without a mention of judd madden.
Probably quite out there (doom/drone/stoner) for most people but his music has always struck me as incredibly from the heart and not some noodling to impress others.
That's a great clip. You might enjoy some of what people have been doing with their desktop studios and guitars in the last few years. Two that immediately come to mind are Tim Henson [1] (already pretty well-known in the guitar world as part of Polyphia) and Manuel Gardner-Fernandes [2].
1. https://www.youtube.com/watch?v=OkHD4OVjS4E
2. https://www.youtube.com/watch?v=JLCtH0KAY8Q