Sounds reasonable. This reason seems to work on many rich investors.
How I wish I can use the excuse on my employer. "Boss, I underperformed this year. But next year, I may outperform. You never know, so continue hiring me at top dollars. You'll regret if you sack me. In the mean time, I have a track record of underperforming for the past 10 years. Nevertheless, you will regret if you sack me. I may outperform just when you need me to. As to when, I don't know."
Sounds like fund manager is the best career in the world. Continue to be paid top dollars despite underperforming over a 10-year period when cheap passive monkeys can do far better.
Businesses might employ people who aren't as productive but have an unique angle which they can use during a crisis when the typical good performers lose their heads.
While I haven't run a hedge fund myself nor invested in one, I have seen first hand how allocation is managed and questions about correlations to several indexes and instruments are what matters. Performance is important but secondary because you can just be long with leverage and by the numbers it looks like you're a genius but in reality...