For what it's worth, Stripe is the only place I've ever worked that did not pay out accrued PTO. It does so only in jurisdictions where it is legally required.
My company switched from PTO to “unlimited time away” to avoid paying out accrued PTO upon departure. Their original home state didn’t require it, so they didn’t. But then they acquired some companies in states that did require it and also let us all work remotely. It was cheaper for them to drop formal PTO and replace it with hand-wavy “time away”.
Wow. Can’t do that here (Australia) - I think to have an unlimited leave policy, you’d still have all employees accrue annual leave (PTO) at the legal rate, and then just let employees take free leave once their annual leave balance reached zero. Any balance you have when you leave (or are made redundant) then has to be paid out.
