Can you explain what benefits the average user would see from this?
Imagine paying for 1gig internet speeds and getting very close to that over wifi with tons of devices connected. That plus the range are pretty significant upgrades. Where someone might need 2-3 "mesh" points to cover their entire house due to interference, you can probably get away with a single WIFI 6 router.
WIFI 6 is a big upgrade for everyone, and we are going to see pretty much every tech product released with it. The new iPad Pro has it, and I think the only reason the Air does not is because intel.