Looking at the filing, the only relation seems to be branding, i.e. they're probably looking to upsell people on wifi routers when they buy internet service (like all other providers do).
They could also be planning on selling it separately as a consumer fan product like the roofing torch flamethrowers.
Best consumer fan product would be a mini ground station for those with fibre connections.
Yes, it is pretty standard to package an access point in with the modem. No idea if they will just include the router in the internet price, or rent it monthly on top of standard charge like how some ISPs do it.