@JacobLJ
It is marketing speak. Not wrong legally, but does not necessarily mean what you think it should mean.
Check this: What are the differences between different models of Deco?
Mind you, even with M4 real life speed for mobile devices will unlikely to be over 500-600Mbps, so align your expectations correspondingly. This is not limitation of Deco specifically, but of WiFi5 protocol.
If you want, at least theoretically, better wireless speeds - consider Deco units or other brand mesh units that support WiFi6. Of course, wireless client must support WiFi6 as well, to get advantage of that protocol and its faster speeds.