I don't think it's silly, though I would never need to use it because they'd be in my home where I have Ethernet in most places and Wi-Fi everywhere.
The standards for Bluetooth data/sound transfer quality have come a long way. The aptX codec implemented into devices today is actually pretty good. Many buyers of the LS50 Wireless will use BT and not know the difference between it and true lossless. I might, the speakers promise to be as good or better than passive LS50.
My preferred stream would be from a NAS through Ethernet, though DNLA wireless should be the same. One of my cousins is a big Apple user and has Airplay. I know nothing about it but was able to connect her Bluesound Vault 2 to her network for Tidal Hi-Fi, feed analog out to her NAD C356BEE and to her Totem Sttaf speakers.
How will you get signal to your LS50 Wireless, and how do you expect to control it?
KEF R500, R200C, R100, SVS SB2000 sub, NAD T758 receiver, Pro-Ject RPM1 TT w/ Ortofon 2M Red, Bluesound Vault2, Sony BDP-S480 BlueRay player, Samsung UN55JU6500F 4K LED TV, KEF M500 headphones, Sony CDP-CE500 CD changer.