What do you need 75 Hertz for?!
Totally unsuitable, 60 Hertz is enough…
Yes I think so
Yes, the Xbox One S works with this as with any other monitor that has an HDMI input.
The One S ✓ has 1080p
The One S ✓ has 60Hz
Most high-quality monitors in the lower price range now come from the factory with 75Hz.