I remember secret rolls as far back as... 80s. Tagging domecdkills as secret by default but also saying others can be if GM chooses seems like a half-measure.I only played PF1 when it first launched but went back to 3.5.
I'm sure Paizo wasn't the first to invent the idea of a secret roll. I'm also sure I encountered them at some point but for whatever reason they didn't resonate with me as they do now.
I myself am not a fan of rolling anything as GM, do I dont need to do secret rolls and would myself ditch that in PF2 if somehow GMing it. But, that's neither here nor there.
I mean, even thec5e DMG presents discussions about secret rolls, hoes over plusses, minuses, why it might be good or bad, etc and leave it to the FM to choose case-by-case.
Is having a few skills labelled as "secret" somehow a major improvement? Perhaps to some,