Yeah sounds like maybe your local dealer is trying to sell you a bunch of stuff you don't need, in order to "make it worth their while". If your controller is from 2019 it's probably an EA series controller which is fine.
I'd be happy to help you out (remotely) as I've done for many others on this forum. At a minimum I can take a look at your system (I'm a Control4 dealer as well), to give you a 2nd opinion/consultation.
I can upgrade you to the latest OS, help you with remotes, etc.
Thanks
Ari