Just wanted to add to the points already made. My son is a first year in the Cornell B.Arch program. He loves it and does not find it too intense. However, he has wanted to be architect since 8th grade. He went to several summer architecture programs, including Cornell’s. The summer programs confirmed his interest.
If he had been unsure of his desired path, a BS might have been a better option. But he did not want to put off diving into the architecture curriculum. I think you really need to love time in the studio. He did drop a couple schools off his list because they did not have other areas he would be interested in IF he decided to leave the B.Arch program (etc., Pratt, RISD).
We asked the B.Arch vs M.Arch question at every school. The answer on which was the better path often depended on what the particular school offered.
Good luck!