why force your customers to expose their exact gps location when connecting to a wifi?

To  be sure of what channels to use, I think they explained once.

What is a base station? Your router?

Reason for location access was previously explained here:

Search for “wifi region regulations”. SONOS wants to serve the global market. It would be very expensive to custom manufacture units and manage inventory for each region. Also, this would prevent customers from legally moving their units between regions. Sure, customers could ignore the regulations, but this could interfere with local services, such as air navigation. It’s very practical for modern hardware to adapt to its current location — if there is a mechanism for it to determine its current location.

But isn’t that what Sonos actually do. There have been recent reports about incompatibility between soundbars and surrounds due to the devices being manufactured for different regions. The WiFi regulations across these different regions are set to each speaker at the factory, therefore location access is not a factor here.

There may be some additional considerations with respect to available 5Gb hardware availability that I’m not familiar with.

The support has said that they need “precise location” to attach a speaker to a soundbar. It is absolute rubbish. 
 

They trying to exploit the gps in our phones to locate our devices and having the wifi password and wifi ssid exposes every single customer of Sonos to jacket attack. All the hackers need to do is hack into the Sonos database and then every single home wifi is able to be accessed. 
 

so many big companies have been hacked to extract personal detail (British airways, Qantas airways etc), but Sonos have the exact location,via gos of our homes plus the wifi and password.  
 

They have made us all a target for hackers

it is just so wrong 

You simply don’t need to know exact gps  coordinates To connect to a wifi

this abhorrent 

Perhaps it’s best if you return your speaker and buy a non-wifi replacement speaker? 

I assume you didn’t bother clicking on the post re-posted by ​@Mr. T where it was explained?:

“Location permissions are required in order to gain access to nearby WiFi names and devices. We do not use or store the location, but we do use and store WiFi access point SSIDs (Service Set IDentifier). These SSIDs are stored on the phone itself in the app’s own data store, and nowhere else. So, we are not collecting the location in terms of latitude and longitude, but we are using the permission in order for our products to function correctly, or indeed at all.”

Doesn’t seem that abhorrent.

There are some considerations for EU and UK surround users discussed here.