Advice on monitors with PS4

Hi! So my boyfriend has expressed some interest in switching to gaming on a PC before but I cant afford to buy him a whole PC setup for christmas so I was thinking I'd just get him a decent monitor for now so he has it when that time does come. He mainly plays 2k, some COD, and other random games when hes tired of the 2k, today he played madden for example or sometimes an adventure like game. I've done a little research and I think im shooting for 160-180hz and 27in-32in. As of now i think I'm going to go with the Samsung odyssey g5 or Alienware. My question is, will he notice a difference and enjoy the monitor as a gift? Currently he plays on like an older 32 inch (not smart) TV i got for free off facebook marketplace. I'd love to get him a ps5, as Ive read they have better FPS but he claims he doesnt care to have a ps5 and frankly I cant afford one. I'm shooting around the 200 range for the monitor.

TDLR; will my bf have a better experience gaming (PS4) on a monitor than an older TV?