https://infogalactic.com/info/Conclavism
idk of what but he didn’t seem super healthy
honestly to me he had one of the most comprehensive understandings of the problems facing Catholicism today intellectually speaking (although many have no idea and just think he “weirdly tried to elect himself pope”), even though I disagreed with view
I can try to answer any questions about his views
a couple of his sites (I do not necessarily agree with some parts on them):
http://pope-michael.com/
vaticaninexile.com
archive snapshots of his site have different content: https://web.archive.org/web/20070205075739/http://www.vaticaninexile.com/
there was a documentary about him but I don’t think it really got in to the issues too much and wouldn’t recommend it too much: https://yewtu.be/watch?v=b96WxyxPfOY
the mentioned moto proprio by "pope" francis was attacking traditionalists in the Vatican 2 church. prior to vatican 2, traditionalists would have been promoted rather than attacked. This shows a clearly anti-Catholic / anti-Christian attitude prevails in the Vatican, such that many Catholics have concluded it is no longer Catholic (sedevacantism). From that point, those like "pope" Michael simply reasoned that if Catholics did not have a pope but instead had a fake woke "Catholicism", that Catholics should separate from such an institution and elect a pope for themselves. I disagree with this argument, but it is little examined so hard to tell if it cannot hold at all.
As far as I know, no plans were made to elect a "pope" to continue this lineage.