We had unlimited PTO at my old job and I thought it was awesome. I'd take day off when sick, whenever I needed a break or I would pad my "annual" time off to extend my break over one extra weekend. This felt pretty standard in both places I worked with this policy. There was no question asked and no direct human interaction to take off. If people didn't take advantage of that it is kinda on them imo. Not to remove anything from your point about forced PTO mixed-in.