I think it's the Chud version of a pretty universal thing. If you're younger than Gen x you were probably locked out of the financial capacity to obtain the signifiers of adulthood like a house and stuff. So what extra money you have isn't much more than your spending capacity you had as a teenager, so your choices in treats are pretty limited to the same stuff you grew up with, this is also now a huge market so it's being fed and advertised. Also everything has gotten sooooo much worse