Scott Christian
Hero
This. This all day!Do you trust your DM to provide a good adventure for all players?

Tools? What more do you want them to have?No.
Because they haven't been given the tools to do so without bending over backward and doing way more work than they should be asked to.
(On a side note, listening to your table and how it's run the past couple of years, it must be maddening for you. Everything is always unbalanced. If everyone is not always min-maxed the entire party is liable to have a TPK. And DMs can't run an adventure that even remotely guides the players. That said, I can assure you most do not have that experience.)
Why? Everyone has to start somewhere, and if you are going to build a game that requires the person running it to have read a 300 page rulebook, a 300 page guidebook, and a 300 page monster manual, why should they be able to run a decent game? The truth is, we all started either with someone that knew what they were doing, or we fumbled through it with friends that showed a lot of grace.This.
No DM should be required to be notably good to run an adventure. A DM should be able to run a decent game while still learning the ropes, and then get better from there.
I swear, it seems like sometimes people forget that this is a game - a game that requires the person running to have impromptu skills, to know the rules, to be able to make logical decisions for their realm on the fly and keep them consistent, and then read the room and make sure everyone feels included and that their PCs have a bit of limelight.
But sure, someone running the game the first time should be able to do all those things decently.