Holy hell I think the greatest truth of the universe is, the older the house, the more generations of Harry Homeowner Handyman have had a chance to muck it all up. Pretty sure I found self adhesive vinyl drawer liner being used as drywall tape today while I was cutting out a bad corner in my guest room that had several layers of paint and a very odd crinkle to the joint... took an hour with a sharp knife and then about a quart of spackle to rebuild it... guys I just don't even know. Is it ok to chase down the Previous Homeowner and just kinda, idk... slap them?
Screw this adulting on weekends nonsense.