I think it's common everywhere to be honest.
Here in the UK there's never been financial literacy taught at a national scale that I'm aware, there certainly wasn't when I was in school, albeit that was some decades ago now, and from what I've seen of my nephews/nieces it still isn't.
My children are still too young to worry about the minutiae, but we're already trying to teach them about income/outgoings and saving even at their middle single-digit ages.
Investing is something I can't say I'm extremely comfortable with the details of even at my advanced age besides the simple things like "I have a pension" and "I have a LISA".
I definitely think there's room for some self-service tools to aid in teaching these things to our kids from an early age.
It's apparently now 30 states.
But going from "it's not a requirement" to "the class is awful" would kinda be moving goalposts, no?
And for many of us, financial education, if there was any, was probably from boomers going "debt bad! credit bad! get a job and make money!".
Seems pretty clear to me that the comment I was originally replying to was about whether there was a requirement for financial classes in the US, not about the quality of the classes.
So we clearly weren't looking at the same goalposts.