what's the betting that it won't offer 40Gbps if you're one room away, or you live in a crowded area, or your office is full of laptops? Even with Wifi 5 (802.11ac), the claimed "1300Mbps" only gives a throughput of about 250-500Mbps in absolutely ideal conditions.
Anyway my gripe isn't so much that it's possibly not as fast as they say, the problem is that companies make new standards quicker than people will deploy them. Most kit is still Wifi 5, with Wifi 6 beginning to make inroads, and now they're talking about wifi 7?! I know we need progress, but releasing things slower, and when they're ready, would actually mean more uptake.