[brudgers]

A young person who has heavily invested in an activity throughout their youth discovering that the activity is no longer pleasant and enjoyable when performed at some higher level is actually and exactly what burnout looks like.

Burnout is realizing that "this thing that once energized me, now makes me unhappy." It's not the same as the apathy of just going to a job to pay for a data plan. Or the same as a bad job which was bad the first day.