Hi. I think that the quotations around the secrets is totally warranted. I was trying to state that I always thought that the "secrets" that many test prep courses tried to sell to parents/students were just question design, and not actually some behind the scenes insight.

Do you really disagree with that? That's what a lot of the marketing seems to be focused on. I felt like question exposure alone got me those same insights, and in fact, the official SAT book rather explicitly lists those things out.

Most people don't read the annoying small text that accompanies the books that spells out a lot of those strategies. Instead they'd rather pay someone a lot of money to tell that to them :)