I’ve got a Microsoft HoloLens which is more than a brick but not much more. it is weird to open up a music player turn my back to it and really have it sound like it is behind me.

Because I trust a random HN commenter more than what I can find on Google easily these days (though I did still search first of course)... why will they be a brick at the end of the year?

If it's not for some strong built-in reason (impossible-to-update firmware has a hard date after which it will crash, etc.), do you think picking up one to experiment with would still be worth it?