Sure, but so is letting "unlimited" just turn into looting by the privileged or some sort of toxic "my manager won't let me take more than a week off". Which is what I've been getting at. People love to condemn Unlimited PTO as some sort of toxic trap, and it certainly can be, but it all comes down to if your HR department is competent and cares. If your management is bad, having fixed PTO isn't going to save you from them.
That's just because it's more common the case that employees get screwed by the company than other way round. One easy way to make unlimited really unlimited is by having a reasonable number of mandatory days off like 4 weeks. Then I'll believe unlimited PTO.
I'm not asking you to "believe" in anything. There are just some companies where you can take 4-6 weeks off and some companies where you can't, and which one you're in depends on which team you work on and who your manager and HR rep is more than what they claim their PTO plan is.
I hypothetically have almost 5 weeks of days off at my current job and between not having much vacation options because of pandemic and not wanting to just be lazy at home, I haven't used most of it. Should someone from HR just tell me I'm not allowed to work in December now?