I disagree. I have played since red box, played all the versions including 4th, I play 5th ed a lot.
For 5e..
1st campaign, no houserules, 3 years run time including transition to online during covid
2nd campaign, no houserules, just a bit of re-skin warforged are necrons, right? etc in person
3rd campaign, added legacy items inperson, different group concurrent with campaign
4th campaign, some house rules on spellcasting (provokes attacks of opportunity etc), accelerated progression till 9th level, expand legacies to things other than items
Play Pirateborg, Starwars or Dark Heresy etc, don't play a 2nd campaign, no house rules. You just live with the short comings of the system, you won't be there for long.
That said, I ran a 10 year rolemaster campaign, so maybe I'm an outlier. But people who read the books and don't play a heap, seem to have a lot of strong opinions. "City X is a terrible place to live- says some tourist who has transited in airport".
I would have thought that if the rules were the issue the "house rule" fixes would be similar if not the same. But the comment I replied to suggested everyone was doing different things to the point where only some of the rules were the same.
Admittedly, I haven't done D&D5th. Too busy to do anything for a while, but even then, last I did were other RPGs.
Problem 1 is that D&D is the most popular and well known TTRPG, so people who are otherwise not curious about roleplaying games might still wind up playing D&D. They might not even realize there are other similar but different roleplaying games to even play!
Problem 2 follows from problem 1. Because D&D is seen as the 'default', many people try to make it be the one-size-fits-all game. It is actually really bad at this, because it has it's roots in a very specific type of tabletop wargame that is still visible in its DNA even today
So very often you find people who would probably prefer a more roleplaying focused game, playing D&D instead. And despite Wizards of the Coasts best efforts, D&D still plays better as a dungeon crawling wargame style game than a pure roleplaying game
My evidence of this is the insane popularity of Baldur's Gate 3, mostly because it had a lot of deep dialogue trees, not so much because it's a good tactical combat game (even though it is pretty good at that)
D&D 5th Edition is a hodge-podge of sacred cows, marketing-based nostalgia, design cowardliness, and compromise.
Other games don’t get house ruled as much because they’re better games.
D&D 5th is the JavaScript of role playing: it’s the most widespread and in a perfect world everybody would use something else.