You're mixing things up (and to be truthful, it has not been made easy)
2 separate things:
APs with wifi: ONLY wifiwave2 capable devices will be able to make use of that package. But it's not needed, you can stay on legacy wifi if your device comes like that out of the box.
AC3 (non-LTE)
Audience
RB4011 wifi version (but you will loose 2GHz radio)
AX-devices (here it is even mandatory: without that package, no radio).
Controller: depending on processor platform wifiwave2 package can be installed so that device may be used as capsman controller for wifiwave2-capable APs.
For legacy wifi-APs (or capable devices but without wifiwave2 package installed), you will still need a separate capsman controller (without wifiwave2 package)
I hope that clarifies ?