You know plugins were allowed right?
"3. Games MUST be created using only RPG Maker MZ (either the one distributed for free during the contest, or one that you've purchased). Plugins are fine, but no other game engine may be used."
As for game stuff, personally I value the negative feedback pretty highly. That's what tells me how to improve my game... Goodness knows just getting any feedback on a game is actually pretty difficult, barring already having a following. So I'm stoked for any, be it good or bad. Honestly if I wasn't barred from updating the game, I'd have probably already done 4-5 updates by now.