Agreed! But when I first played this back when I was the first vote I found a way to get past the flashing background and fully complete the game, somewhere in the level there is a code that you can find that you need to input when you get to the flashing background part (it might be "91303" if I remember correctly). You are then brought to a fun physics-y boss fight where you launch balls and dodge balls, after that fight you then win the game.
(I thought I left a comment here but I guess I was too shocked by this super surreal experience!)