Yeah, and then ran away to Switzerland rather than work to preserve the democracy which made his fortune possible.
SpeakFreely was his as well - a very early encrypted, VoIP app.
And this: https://www.fourmilab.ch/hackdiet/ ... As I said - an interesting person :-)
While I'm grateful Autodesk stepped in and kept TinkerCAD afloat, I'm relieved Sketchbook escaped their clutches, and am glad I never got involved in Fusion 360 so as to suffer from their on-going "rug pulls" --- which of these are a result of his influence, I've not found a need to discern.