"Applications that struggle with latency [..] will also benefit"
How ?
WiFi is local. It's all very nice to have a mutli-GB connection to the nearest fiber link, but if that fiber is only 1GB, I fail to see how so very much better WiFi 7 is going to be.
To be clear : I have a 1GBps fiber link coming right into my home office. Thanks to that, we can watch TV without lag, while my home PC is torrenting Linux ISOs, my wife is on the Internet on her smartphone and her laptop, and my daughter is downloading God knows what while also watching whatever it is she finds interesting.
Of all of that equipment, the only thing actually tethered to a physical line is my home PC, with its GB network card connected to my home switch that can handle GB connections and is linked to the Orange Box, thus to the fiber that allows everything to communicate with them thar intartubes.
From where I sit, WiFi 7 is not going to increase the speed of my fiber. So the fiber is the limit, the bottleneck.
And I don't think that's going to be a problem for my household. WiFi 6/5/whatever is working fine here, thank you. Including WiFi 7 in Windows 11 which is mainly used in tower PCs (which have a GB Ethernet connection already) and maybe some fondleslabs, is not going to change the universe, as far as I can see.
But yeah, I know the drill. Marketing needs to feed . . .