It seems like he's played too much Oregon Trail.I'm reminded of a a-hole dungeon master I once had in D&D. Our team was traveling, and he showed us on the map how far we'd get in a day. We then say we'll walk another day, and he shows us where, and then another day....
...and then he says we all die of exposure/exhaustion/dehydration/starvation (pick one), because we didn't say we stopped to eat, drink or sleep. End of campaign.
We didn't play with him again after that.
That's one terrible DM. It says so much about his objectives that he would pull that crap. It must've been his first time because you can't possibly sustain a decent campaign with that kind of attitude.
With my buddies I was the DM (or GM depending on what we were playing) and we had a culture of complete open world play which was incredible fun. Creating/improvising side quests generated by the unpredictability of my friends was the best. Sometimes they would burn half the day with NPCs in the brothel (we were teenage males). Of course there was one guy who didn't always get into the spirit and was frustrated that his buddies weren't advancing the "plot." He got to guard the horses or look for mini-side quests while his buddies were in the inn/tavern/brothel. I was often running two plots simultaneously. Great times.