Yeah, this threw me as well. When the iMac didn’t support WiFi 7, I got a bit worried. I have an M2, so not going to get this, but the spouse needs a new Air and I figure that everything would have WiFi 7 by then, and now I don’t think so.
Faster is always nice, makes sense. But do you really need WiFi 7 features/speed? I don't know when I would notice a difference (on a laptop) between 600 or 1500 Mbit/s (just as an example). Can't download much anyhow as the storage will get full in minutes.
wifi 6 can’t do shit given that there’s crazy overlap if you go for 80MHz channels. Most situations tap out around 700Mbps over usually a 40MHz channel.
Wifi 6e/7 6GHz band with a bunch of non overlapping 160MHz channels is where the juice is at. But even then a lot of devices are limited to smaller channel widths.