What's most disgusting is the tone and wording of the e-mail linked in the Reddit post. It reads like they're outright delighted to be breaking your 90-dollar piece of hardware. Not even a fake apology. Tech bros are getting more and more brazen.

That email would be fine if they were just discontinuing a feature of their ongoing service - it's disappointing, but you got value out of it while you were paying for it and now we're stopping and won't charge you any further.

But this is a stand-alone piece of hardware that they sold without an explicit expiry date, in a product category (car audio) that generally lasts decades (as they are solid-state devices with no moving parts) and now they're outright making it useless 2 years later without any refunds.