I think you have to use snap (I can't recall the incantation, snapctl??) to remove the snap mount points (which I think are made when snap packages get installe

I think you have to use snap (I can't recall the incantation, snapctl??) to remove the snap mount points (which I think are made when snap packages get installed) first otherwise they don't get removed by simply removing snapd. Only did it once, so far.