Not a native English speaker myself, but it seems to me like the core explanation is clear as mud:
RouterOS packages
Starting from RouterOS 7.13, the routeros (system) package and one of the wireless packages are needed for the basic operation of a simple home router.
802.11ax WiFi APs require radio drivers, which are provided by the wifi-qcom package or (for RouterOS version before 7.13) the wifiwave2 package.
Previous generation WiFi APs require a wireless package.
Other packages are optional and not required for a home router. Install them only if you are sure of their purpose.
Two kinds of devices, "simple home routers" and "Wi-Fi APs", these latter ones clearly divided in "802.11ax", if on 7.13, not to be confused with "previous generation".
The only missing part is that you shouldn't upgrade on wednesday nights (if there is a full moon, but not if the wind is blowing from south, then you can upgrade but only before 3:00 AM, obviously this applies only to previous generation devices, unless they are ARM, but if they are ARM64 it is fine).