Earlier quoted context omitted.
There’s not a fucking thing that’s even slightly improper about taking your allotted PTO days.
It is improper to take sick leave if you're not sick. It wouldn't be improper if it is labeled PTO. I.e. it depends on how the policy is written.
Contagious cold? A rough day with anxiety/depression? Struggling with the side effects of a new medicine? Hung over from a night of partying?
If the company’s policy is 10 days, then there is zero reason to negatively judge an employee for using those days.