I would hesitate to argue that temps aren't a problem, because they certainly can be, and improper fermentation temps is possibly the biggest mistake new brewers make.
But after looking at his fermentation schedule I don't see anything that would cause a problem. He got the temp down at the start and kept it there for 2 weeks, by which time nearly all of the sugar would have been converted and the yeast already started working on cleaning up. Those first several days are the most critical to the flavor of the beer, and even if the temp went up later, it wasn't so high to cause a problem.
And I'd disagree that extract is more susceptible to fermentation temps than AG beer. What difference does it make? Always ferment at the lower end of the yeast's optimum range for a cleaner flavor. That's the case for all beer.
Surely it would be better to use a full boil if you have the kettle capacity, and to do a late extract addition method, but it's not a huge deal if you can't. It certainly won't make a beer that you can't stand to drink.