Dunno, generalizations are SO dangerous. My S was reading before he started preschool and ever since. We didn’t teach him. My nephew and great nephew were reading at age 4 and 5. Our D and niece didn’t start reading until ages 6-7. The girls and our S still love reading and are avid readers at late 20s, early 30s.
Yes, it would be great if everyone loved reading and math and could do it well. I’m not sure anyone knows how to make this happen.