I don't know what your guys' issue is. It's all about proper seat pre-flight (or so I say). I've only had the seat drop on me once (okay, maybe twice). Fortunately it wasn't in one of those planes where you can't get it back up unless you get out. I hated those planes. Yet even after unstrapping, getting out, and strapping back in, I would still beat the stud to "Canopy-Closed and locked."
The issue is the POS seats, the old airplane, the bad canopy's, bad seats, bad seating position, etc. I've had the seats drop at least a dozen times. Then they won't come up. Maybe it just happens to those of us who weigh more than 200lbs? I'm 210-215 but naked (there's a vision for ya) and probably 230 with a flight suit, boots, gear, etc.