Yeah, it sounds like this guy has some kind of specific problem, which maybe squatting can relieve.
I looked him up, assuming he might be an old guy, but he appears to be early-to-mid 20s, meaning that spending ten minutes just to take a crap on a regular basis is not normal.
What if he has a good book on hand? I've been known to spend hours in there due to good books. It gets very uncomfortable, but you just can't put the book down!
Don't read on the toilet seat. loewenskind has already said it, but I think it's important enough to repeat clearly. Sitting on that ring puts pressure on the anal muscles.
I looked him up, assuming he might be an old guy, but he appears to be early-to-mid 20s, meaning that spending ten minutes just to take a crap on a regular basis is not normal.