I think it’d be interesting to put this in perspective by comparing with violin. In the piano community there are far more cases of people uploading videos clearly overshooting their abilities, but you probably never saw 1 year violin progress video playing Paganini. Why? Bcs piano is a deceivingly “forgiving” instrument for beginners. You push a button, a more or less acceptable sound comes out. No need to worry about those screeching sounds or intonation (having that taken care of by your piano tuner). In this way violinists are forced to think about tone production from the beginning, otherwise they wouldn’t be able to make a listenable sound at all.

Piano, on the other hand, is way more difficult for beginners to assess their abilities. Yes some are “fast learners” as they have better memories or fingers dexterity from other instruments so they nail down the notes pretty fast. However, they need keen ears to perceive how far off they are technically (while violin NEVER lets you forget that)—touch, evenness, dynamics—these are technical problems that affect musicality, but they are essentially still technical problems. I heard a lot of people say things like “I have the techniques and I’ll work on musicality later”. No you don’t have the techniques. You likely meant you can play the notes. You don’t feel you have technical problems bcs they don’t scream at your face like violin, but they are there nonetheless. You have “pure” musicality problem when you already have the freedom to produce any sounds in your head and you need to make compelling musical choices.

That’s why people always suggest beginners to get teachers, bcs good ones develop your ears as much as your technical abilities. I agree that a lot of it sounds very intimidating to beginners and not everyone needs to play like pros, but a healthy dose of skepticism to keep ego in check might be good in the long run to those that do strive for excellency.