I also applied the libraries you provided. I can't imagine a submission should be judged because of something that has nothing to do with the content of your game, so I'm rating it on its own merits.
Aside from anything you already mentioned about it, the gameplay works well mechanically! OpenGL from scratch is ambitious, so absolutely kudos to you for getting it to this state in such a short period of time. I do like the idea as it's a bit different than another submission I've seen in a similar vein, but it would be cool to see some variance in how that unearthing works.
You did a great job friend, and I hope your move went well!