Five Device Limit includes Apple Watches and iPads? Really?

A 5 device limit for a family plan makes sense for phones, I guess.  I've never seen any other carrier include wearables and tablets in that limit though.  The Watch doesn't even require an additional line, it is a secondary device attached to an existing phone number! A family of 5 can't use a wearable or a tablet with XM -- This seems pretty limiting for customers.

Has anyone heard if this policy will be changing anytime soon?  I'm happy with the pricing and service, but if I can't take advantage of devices that every other carrier allows, I may have to look for another provider.