Worth noting that WiFi 5 is 802.11ac, which only applies to 5Ghz; any WiFi 5 gear is using 802.11n for 2.4GHz. (Edit: Pi 4 can do 5GHz) One wonders if they skipped doing a 5GHz antenna for cost/space/other reasons.
I wonder if they just recently decided to go with the CM4 module and failed to update the specs to match. The video shows them using the CM3 module, which does have lesser wifi/bt specs.
There was a previous version of this tablet using the CM3 with wifi/BT hardware on the carrier board, they probably just forgot to update that part of the specs page. The new carrier board does not have wifi so they are definitely using the CM4's onboard wireless hardware.
