Exactly- sounds great but in practice often not great. Depends on the culture. I once worked for a small but ultimately very successful start up, as a married guy with kids. Unlimited PTO sounded great. Until I planned my second week long vacation in a year and got a lot of side eyes. Two weeks per year of vacation was less then what I got when PTO was "limited". In practice under unlimited PTO you could take a week off but more than that resulted in a PIP for something else.