I understand that you can feel frustrated by the level of polish of some jam entries.
In my experience online contests are not a level playing field, as participants often come from very different backgrounds.
When hobbyists or students are competing against people who are doing this for a living, it can feel unfair to have them be judged on the same scale.
Art assets are not only thing that make a game good though, in jams we constantly lose to games that have less impressive graphics but better gameplay.
Anyway thanks for playing our game, I hope you'll be able to relax this weekend as I'm sure you had an exhausting week working on your game as well.