While you think just about any song is there I am willing to bet that that’s not true. You can only learn pieces that somebody bothers to prepare for YouTube. What ever other reasons you can think of for why you do it now. You get to hear the song while you go along You don’t have to learn standard notation now
Just like learning guitar music with tabs rather than traditional notation there are advantages and disadvantages. Whether it is the best idea or not in the long term depends on your goals.
