Is that dangerous? - Feddit

(Not mine)

Yes. Replace your rear tire immediately.

Also, have you considered riding somewhere that isn’t straight? You’ve got no meat in the middle, but you’ve got nice, fat, juicy chicken strips on the sides.

It’s probably due to burnouts.
I was thinking the same thing. Either this person didn’t replace their tires in a couple of decades or does insane acceleration/turns/burnouts/stunts.