It also says "tap to ARROWs" (typo "tap the ARROWs"?) but there aren't any arrows to tap either.
Tested on: Chrome Version 144.0.7559.60
Couldn't get beyond this screen unfortunately.
Slightly related, there was a VR game (that unfortunately got absolutely buried under the significantly more successful Beat Saber) some years back called Sound Boxing that let people create step tracks to songs on YouTube, and you would punch, duck, bob, and weave to the beat. I absolutely loved it.