"You Either Die A Hero, Or You Live Long Enough To See Yourself Become The Villain"

I feel like this can apply to you and your approach to exercises.
Guess who else had a huge collection of exercises - Hanon
Guess who had 0 noteworthy piano compositions .... You guessed it!
Here's what I think would be 1000x more valuable.
Try and learn a piece, get stuck, devise some exercises that helped you learn the piece. Note these exercises down and then republish the piece of music with your exercises as a "student copy" or something along those lines. From here you will see, I am sure, patterns with exercises that then show what are valuable vs what are not.
Alternatively get into teaching. You can get some beginner students, and see where they struggle, because often it is common things - bumpy thumb under, weak 4th / 5th fingers, e.t.c.
Nobody is going to be in awe of hearing you power through the most difficult technical exercises, and despite you thinking mastering exercises alone will make you more confident in your playing... you are wrong.
There are potentially millions of different combinations of notes you can perform on the piano, each of which can be considered an exercise. All the time in the world will not allow you to complete such a task, let alone work out the good exercises from the bad.
Honestly at this point I don't know what's more crazy, that you keep making these posts, or that people such as I keep responding to them. This is my last
