Nah, I hate maths and never studied at home. Still did way better than kids with difficulties that were studying way more.
Not studying didn’t pay off in higher education (focus issues, possibly undiagnosed ADHD or related), because talent ALONE is not enough anymore, but before then I had an objectively easier time than most and that was with little time or interest devoted to it.
We ALL use the concept of “left” and “right” daily. I’ve been doing that instinctively without a problem since I was, like, 8. Some adults still need to use a mnemonic every single time. Is that because they don’t have enough interest or didn’t spend as much time on it as 8 yo me did? Of course not.
I have put hundreds of hours into one of my hobbies, digital photography. I really like it. I have watched and read plenty of theory and know most of what there is to know about what makes a good picture. My photographs are only halfway decent and nowhere near what they should be given my time investment. And that’s OK, because I know it’s not because of anything I did and I like the hobby anyway.
Your argument does not have a leg to stand on. Someone with music agnosia cannot learn to play the guitar like you do. Dyslexics cannot “just study like I did” their way into being good at mental arithmetic. Pretending that skill is ONLY a function of time and drive is extremely pretentious and factually incorrect. It’s the “you’re depressed? Just do like me, think happy thoughts” of education.