My second paragraph was about beginners and what seems to me their best course, not sure why you say that. (TAB for guitarist beginners similarly "can make a huge difference" I'm sure, but also it keeps you a beginner.) It seems you ignored what I said about scales and arpeggios. I wrote my previous comment because it seemed you similarly ignored what the person you replied to said before. But sure, whatever works for you. Good luck!
I care absolutely nothing about piano basics. I have a busy full-time job and tons of side projects so I have absolutely no patience for learning boring basics. I paid hundreds of buck for piano lessons in college but I ended up going to only two lessons (again - busy!). Yeah I know it would possibly develop bad habits, but as long as I can play pieces I like, why would I care? I just want the thing that would satisfy my short-term needs. I know that spending some time training my basics would make me a better player, but this boringness is going to let me give up on piano entirely.
Again, no offense intended - just trying to describe a unique persona. So no need to educate me on practicing the basics - I have had enough of those from many people...
I often feel that the fingering I come up with myself as a beginner is suboptimal. What I usually do is to watch youtube videos repeatedly to study what experts do. And that really helps me correct some bad adhoc fingering. I'm sure it's an experience thing - I can totally understand why experts would consider fingering on a sheet as useless. But for beginners it can make a huge difference. You probably don't care about beginners. But that is a huge market with strong needs unsatisfied (besides auto-fingering, auto-transcription of popular songs is another one).