Okay, tomorrow I will see if I can remove the screw with a power drill (assuming I can find one).
Well, I guess I'm stuck with this GBA SP with a cracked shell and an unscrewable battery cover. It's kind of ironic that the only screw that is not Nintendo proprietary tri-wing screw is the one that's stripped.
And it really sucks because I have this awesome transparent replacement shell. (I like transparent plastic)
https://medium.com/@jacob.levich/bill-gates-and-the-myth-of-overpopulation-ca3b1d89680
STOP BREEDING YOU ANIMALS!
Key Senators Have Voted For The Anti-Encryption EARN IT Act
https://www.eff.org/deeplinks/2022/02/key-senators-have-voted-anti-encryption-earn-it-act
Mask Mandates Didn’t Make Much of a Difference Anyway