“Unlimited PTO” is a meaningless term, and a trap.
I have 42 days of PTO per year, plus 13 state holidays.
I have a right to take those days off, they can’t be denied by anyone.
And if I don’t take them, my team lead will have a talk with me in October at the latest, because the company would get in legal trouble if I didn’t get them.
With “unlimited PTO” you have no such right to any amount of PTO.
Sure, you could try to schedule lots of PTO, but it can just be denied (“not possible right now”), or if you take too many, you’re just fired.
We have an app running on CentOS 6. The vendor of the app informed us they expect to have a new version that can run on RHEL 8 by the end of the year - 2025.