Don't worry, Drifty definitely hated my game. He even brought up some issues that was explained in the tutorials... The battle tutorial was long, so I made it optional. I had one short, but unskippable tutorial about enemies that take 0 damage. I had optional tutorials (signs) that were supposed to teach you about monster avoidance and lighting dark places and some secrets.
There were maybe two or three actual issues that he mentioned, which are things that I already knew I needed to work on, but didn't have time (based on the rules, I couldn't just important my system from another game, so I had to make new systems and doing that without plugins takes a long time. I actually disabled systems because of the limitations of the engine without plugins (One was scrapped because it looked off due to how the workaround worked).
Other issues included that I should have used plugins. Easily solvable, but kind of kills the point of a 'no plugin, no plugin-like scripts challenge'.
Honestly, I think this just proves to me that RPGMaker MZ isn't that great without serious modifications. I never did make a plugin set for MZ because of all the issues it had (and to an extent, still has). Monster did a good job at not using plugins, but also a very different type of game than mine. Mine is honestly better off in Unity or Godot because I don't have to rewrite the base engine to do what I want to do. I wanted to give RPGMaker one more chance, but I think I'll give up on it now.