I've seen it rationalized by saying you should be moving jobs every year or so, because if you're not doing that, then you're not growing. I've always thought of this as a sort of Julius coping mechanism. On some level, I think a Julius views a non-Julius as a stagnant old gray beard who rejects the "growth mindset".

To be clear: I've never seen people who follow this strategy contribute anything of value, and it's the biggest red flag on a resume. You learn and grow more by seeing things through.