Most popular stuff becomes way bigger than the artist and the artist gets drowned out. That's just how it works.
Also, Im not one to blindly go with an artists take on their own art >_>. We all have subconsciouses we don't completely understand. Their opinion matters the most, but it's not the end all for me. Not to mention they can be talked into the benefits of selling an alternative perspective. Lil Nas X will also most likely admit he knew shit about music compared to what he learned after that song and being into his career.
Also, Bone Thugs did it way better 2 decades before him >_>.
https://youtu.be/gcbe-dznTZk
Tbf, Old Town Road works better to cast a wider net. I do understand why it would catch more ears on first listen even if both were released side by side. Mastering simplicity that catches on is it's own skill. So many rappers have failed to try to catch a mainstream audience by simplifying
Name checks out
"I don't wanna be the toughest, I just keep it 100 and think nothin of it"- Black Thought