Honestly, I really should have done that. I even thought about it as one of the things to do before the final submission, and I had solid 15 minutes left between final version and the deadline so it could and should have been done.
Now, frankly the button is a debug option, the original intention was for the player to either have traditional power ups drop from enemies, or every few waves giving the player a choice of weapon Vampire Survivors style. But I didn't have the time to implement either, so I just left the debug button in the public build as a good enough solution ^^'. But yeah I really should have bound it to tab or something