He talks a lot, but really, it's just a lot of filler.
12 minutes of slow talking and he has three main arguments.
1: It's a lot bigger than the original enterprise.
2: It had a lot of modeled details that went unused.
3: It would have been so big, that there would have been a lot of stresses on the hull during acceleration.
Those arguments are pretty weak. They had to design the ship before the first episode, so they would have had no idea what would be needed for a long running show, if they didn't put a lot of details into the ship, the writers wouldn't have options. They didn't know if the budget would allow for a bigger engineering set, or a captains yacht set, etc.