I wanted to buy a 72hz monitor for the ps4 so then you had cons of monitorist a iiyama g-master black hawk?
You probably mean 75 Hz.
Disadvantage? No, why should you.
The PS4 but probably eh can spend a maximum of 60Hz, so synonymous any TV or cheap monitor is sufficient. So you would not have an advantage of the 75 Hz, since the PS4 outputs only 60 Hz.