Lossless is relevant regardless of what some objective measures say or what even a blind test says. The entire audiophile community is the evidence. They can also point to measurable distortions and debatable issues in the audible spectrum when compression is at play.

Also I can't connect more than 2 devices to my Bluetooth device right now, and even that is very new. That's a lot less than 10. The point is we need to be able to connect a full power speaker setup, audiophile grade headphones, a keyboard, a mouse, a dac/amp stack, and a webcam all at once with low latency and no interference and full bore uncompressed audio quality maintained on each device for audiophile products to move fully wireless. You won't ever convince audiophile diehards that their music sounds the same on Qobuz vs YouTube Music or Spotify on Bluetooth as is. We're not talking about a room full of 100 average people, we're talking about the one person in the room who cares. When the room has 8 billion people, that's still a market large enough to sustain wires for some time until a wireless tech can stream full bore FLAC without compression from an average phone.