There are tons of games that have people who enjoy them causally, but have others who strive to develop their skills and seek mastery.
D&D is one such game. Playing D&D is a skill and you can develop it and get better at it. Doesn’t mean any insult to those who just want to play causally.
As I said above, if low level is too meat grinder (which is as disparaging a term as training wheels in my mind)/ boring just start at the higher level that would give you the experience you prefer.
But some people enjoy what you call ‘meat grinder’ play and enjoy the challenge of overcoming greater challenges.
I apologize if my joking was taken as disrespectful to any play style.
One of the first big games I played in was certainly a grinder. Something like 1/3rd of the 1st level characters died each night and it was an accomplishment to make it to 2nd. It's apparently not the kind of game I or my friends run anymore since we haven't in ages, but I would dearly love for a time machine to take me back to those games almost 40 years ago that Bev DMed at her store Toad Hall. (I'd also like my bed time to be about 1 hour later than it used to be so that I could stay to the end of all of the sessions).