You are absolutely correct. I have also only attended one law school for my JD, but have taught at a few and have been on a curriculum review committee (in which we looked at other schools). This is definitely my experience.
I don't just think, I know. Calling four block week courses spread across 3 years "infinite" is extremely dramatic. Several schools have 3 block weeks (1 in each year). The UofT does two block weeks as well. One in first year (Legal Methods) and one in upper year.