Many have used receivers for years without network features. Many have used network connected devices for years using ethernet connections. Network features and wifi have come a very long way.
Wifi 6/AX is great. Some new devices still use Wifi 5/AC, still great. While some devices have gigabit ethernet ports, many do not have them and Wifi actually can provide more throughput. Results will vary of course.
Anybody using an older router or service provided gateway can improve their network with a new Wifi 6/AX router. It will work best when placed optimally. New routers will have Smart device apps and one can see every device on their network easily and can rename them and add custom pics of those devices.
The Apple eco system is not for everybody. Apple’s iTunes has also changed and the Apple Music service and app are great for getting a library to play, well, anywhere when synced to every device signed into a particular Apple ID. This means I can stream a ripped CD in my Mac to my iPhone anywhere I have a cell or wifi network connection. I can also download it to my iPhone.
All ripped CDs, iTunes purchased downloads and any Apple Music streaming service albums added to my library, but not actually downloaded to my devices, will all be together in my Apple Music library and available from any Apple device to which I am signed in using my Apple ID. If going over to a friend’s house with an Airplay equipped receiver, I can connect my iPhone to their network and play anything in my library there as well.
I did at one time just use my WD My Net router/storage combo to stream downloaded music anywhere to my iPhone and any network devices to which I was connected. But, WD gave up on it all and stopped supporting My Cloud on my device and got out of the router business.