There was an informal study done in the early 20th century, where a superintendent decided he didn’t think math was that useful and told the 4 poorest elementary schools in his district to stop teaching it. (He chose the poorest schools because he knew the parents wouldn’t put up as much of a fuss as at the wealthier schools.) They still taught how to count, read clocks, and make change, but besides that they had no formal math instruction. They used the extra time to read as a class IIRC.

The result was that, despite lacking 6 years of formal math education, the students in that district were only one year behind the other students when they went to junior high. That is, they were able to recover all six years of missed elementary school math education in one year of junior high. And in the superintendent’s opinion, those students were better at critical thinking and were able to solve some problems their better-educated counterparts were not. I can find the link if anyone is interested.

Basically, it seems like kid’s brains are just not able to efficiently learn math. I know I could learn math concepts now that would have taken me much longer in highschool. I kind of wish we would just let kids be kids for more of their lives