I'm not denying that. I'm just wondering if anyone measured if there is a correlation effect being induced by CS major declaration requirements.

Barely over a decade ago, CS tended to be a large but not too large major by enrollment in most universities yet nowadays it is the most in-demand major in most universities. You can see this at Stanford [0], but most other programs as well.

[0] - https://stanforddaily.com/2020/04/25/stanford-in-the-2010s-t...