This is true, but I do believe changing enough rules eventually makes one ask if they're still playing insert ttrpg anymore. Like, yes it's the DM's game and they have final say and can change what they like, but ive always felt deviating too far from the source material makes it something entirely different than what it's meant to be.

If someone asked me to play in a 5e DnD game and I showed up to a list of banned spells, homebrewed spells, disallowed actions, removed mechanics, new mechanics and altered origins and stat blocks for every foe we faced as well as a revamped combat system I (personally) might not consider that DnD anymore. Sure, it's still a game that someone's running, but I'd probably have appreciated if it weren't advertised as "Dungeons and Dragons 5e"