Nothing misleading there @Dave_W - everything quoted there is true. Sorry, where's the confusion?
Yes, if you have a Chromecast then that would work. Chromecast and Airplay are completely different.
Finally got round to getting a Google Chromecast and all working ok. I can now cast BT TV from my phone app to my TV. Under Settings, Device management, the Chromecast occupies one of the four device slots my phone on another.