I recently moved to somewhere with a real fiber internet connection and was impressed that I could get up to a gigabit speeds but when I tested it I found my wifi network could only handle about 100Mbit and sometimes it was dropping to 50. First time I have ever had wifi actually be the limiting factor. Thankfully my apartment has wired Ethernet to most rooms so my steam downloads are flying along now.

I think most people will find that they'll get <100mbit over wifi. I had to design, buy, and implement 802.11ac stuff to get close to gigabit. And then wifi6/802.11ax came out and nothing wanted to play with Linux and wifi6. So I got a fiber media converter and put a switch on my desk backhauled over fiber to the "house switch" which is in turn backhauled to the server barn switch via fiber. Doing this prevents lightning from blowing up my wifi access points and NAS boxes, which has happened before, necessitating the need for fast WiFi in the first place.