The thing is that e waste recyclers generally try to re sell working electronics and have come out hard against Sonos's recycle mode.

There's a reason why the saying is "reduce, reuse, recycle" in that order.

They also don't verify that you recycled it, practically it only makes sure that the otherwise working speaker is removed from the market so that Sonos isn't competing with itself. I'd imagine that a lot of these just end up in the garbage.