To wit: elves, dwarfs, and humans; classes and spell slots; kobolds and copper pieces.
I do not feel like that is a criticism, that somehow the game is lessened by that quality, but merely that it is an observation.
In fact, the players in my group love this game. They actually invested in buying copies of the Player's Handbook (more on that later). They want me to keep running it, even if I am losing steam. Why? Because it feels like what they think D&D should feel like.
Now here is my problem with D&D5E. It doesn't feel like what I think D&D should feel like. It feels like what D&D should feel like to people who came in at Third Edition or Fourth Edition and who have read some earlier edition books and a few dozen OSR blogs think it should feel like.
For me, the issue is the question of player skill, and what player skill is.
I have always liked the author of the Hack & Slash blog's definition of player skill:
It's your ability to gather information by asking questions and make decisions to survive and succeed at encounters.This definition of player skill awards attention, creativity, and roleplaying. What this definition doesn't include is knowledge of the rules. Why is this important? Because in the former, what makes a good player or a poor player is how invested they are when they sit at the table. In the latter, it is what the player invests outside the game: reading the rulebook, combing RPG forums and websites, and generally spending time trying to figure out how to use the rules to be more successful at surviving or succeeding at encounters.
For games where player skill is knowledge of the rules, ultimately players who don't have that time to invest in plumbing the depths of class builds or massive equipment lists or power frameworks or whatever iteration of that particular style of RPG design are penalized for spending their outside-of-game time working jobs or raising kids or pursuing other hobbies or interests.
There's a moment when the guy who is the single dad raising two kids and working as a college professor and who plays in a Celtic instrumental group says to me "my PC feels really underpowered in comparison to everyone else" and he understands that in order to fix that he needs to spend more time reading his copy of the Player's Handbook so he can pick more effective spells and maybe switch which class career path that his PC is on and that's the moment that I stop liking the game.
And that moment happened while playing 5E. And I get that my disposition in a matter of personal preference, and that some people like games where really drilling down into the rules is part of the fun. But I'm not that guy, and maybe that moment was a poison pill for me, and maybe why I still look at other Fantasy RPG's like Fantasy AGE that have simpler mechanics. Because I don't want to penalize people who don't know the rules, but are clever roleplayers who have a lot of what I consider to be player skill.