Similar, I could notice a difference between the quality of work between the basement and the rest of the house. Basement definitely had a poor DIY feel.ugh. yeah my basement was definitely wired by a DIYer without a clue or a contractor that didn't give a flying f. I'm changing all of mine from the round style to the square so I can tell what I've replaced. so far found unlanded wires, grounds snipped off, and loose connections or trying to fit 3 wires on a screw and janky shiz like that.
I'm probably 2/3rds of the way finished. I agree I think the back stab connection just isn't as good and makes it seem like amateur hour.