It was already the same story with AirPower (the wireless charging mat). They've pre-announced it, even tried to upsell it by advertising it on the AirPods packaging. It just turned out physics is ruthless.
TBH I've been increasingly sceptical about voice assistants in the "pre-AI" era. I sold my HomePods and unsubscribed from Apple Music because Siri couldn't even find things in my library.
I have almost the opposite problem this year. I tell the HomePod to turn the office lights on, it sometimes interprets this as a request to play music even though my library is actually empty, and the response is therefore to tell me that rather than turn on the lights.
Back in the pandemic, same problem with Alexa. Except it was in the kichen, so it said (the German equivalent of) "I can't find 'Kitchen' in your Spotify playlist" even though we didn't even have Spotify.
This is a solved problem since ~1970 -- they're just not spending enough time on it.
No idea what changed, but it sucks.