You’re right that the main intention of the HomePod is to play music autonomously. But you can’t deny the fact that every Apple device has Bluetooth functionality except HomePod. You can play music to it direct only through airplay. You truly don’t think that is not even in the least bit suspicious? One of the main uses of Bluetooth is music playback but the only Apple product not to have it is a speaker?
What's there to be suspicious of? You accuse Apple of "such greed." How is Apple realizing that greed and making a ton of money by not supporting Bluetooth?
HomePod was never intended to compete in the Bluetooth speaker space. And certainly not at $300.