I cannot say if your comment is sarcasm.

Do you think devices are retired because they aren't sold? Why would you want that information to be known only by bad actors? Just imagine trying to convince someone who mounted a beautiful android 4.4 tablet to control their smart home (heh) 5 years ago that they will have to redo every thing because they bought into a proprietary protocol and the base os isn't receiving security updates.

Or do you truly believe you are safe if you hide under your bedsheet?