What do you think they do with _unlimited_ Paid Time Off usage numbers?

Boss at review time "well Bob only took 5 days off last year, you're at 15... Do you think maybe you could be a better team player? It's not fair that you're taking triple of what your team members are. Think of them and the stress they have when you're on PTO."

Excerpt from one of my actual reviews. I quit a week later.

Edit: I joined the second week of January 2 weeks after unlimited PTO went into affect. Before unlimited <5 years got 15 days PTO.