>>FartyM+(OP)
Exactly, I got into quite a heated discussion with a company that offered me a job with "unlimited PTO". They wanted me to sign in the contract with a clause along the lines of "you have unlimited PTO within reason". The whole point of contracts is that you have to explicitly define what is deemed "reasonable". I insisted they put a number to it and they refused.
Needless to say, I didn't accept the job in the end.