For that guy in the article - we don't know enough about him. But he does reckon this -- 'And playing wasn’t giving me the same satisfaction I felt when I heard beautiful music played by others.'
From the article itself, it does look like he gained quite a lot of experience in playing the piano.
At the end, it just looks like he is/was not doing what is/was required to keep progressing/advancing/building - which is simply to keep going (no matter what) - with the help of relevant resources (teacher/information/tutorials/practice etc). So maybe a case of - if he hasn't got the time and effort or drive etc, and not put any more time etc into it, then nothing is going to happen, and he won't know what nice breakthroughs he could actually make in the piano and music area.
The nice thing is -- just because he says he quit, and the piano is silent, it doesn't mean that the piano will remain that way, or that he won't start up again later, even if he implied permanent quitting. He's always welcome to un-quit later.
HeartKeys I could go on about my thoughts on above. Anyway thanks @SouthPark for bringing up the instrument-capability aspect of the piano.
You're most welcome HeartKeys. Thanks for adding those other very relatable and excellent comments about piano. That comment about ease of sounding 'not terrible' was so excellently-put. Piano is certainly one of those somewhat self-intuitive instruments - where a beginner can indeed just hop on, and have fun working out and remembering what sequence of keys to push in order to get something going - such as a tune they like. The one-to-one finger to note mapping/translation - and the repeated 12 notes pitch pattern along the keyboard - is quite convenient! And which is quite unique. That gets the foot into the door of the piano/music world very nicely.
The ease of 'not sounding terrible' is accurate.