It just seems like wasted effort, since the company all this supports really has made it clear they do not want you to have this ability, and can at any moment make future updates break everything all over again, leading to a new effort to reverse engineer the changes.
I feel the same way about computers - like, who gives a damn what apple thinks. I have a laptop that is still going because people keep making it compatible. That's a good thing, not a bad thing.
Very few non-classic and/or popular cars receive massive aftermarket support for all parts - often the aftermarket supports parts that are in common with a lot of vehicles or are vehicle-agnostic (such as belts, etc), and in some cases you're plain SOL (try replacing an airbag on a 1993 Dodge Caravan, for example - all you can find are OEM used ones pulled from junkers).
I think your comparison would be more apt if, say, Ford disabled all vehicles that were 10 years + 1 day old. While Apple isn't disabling your OS, they leave you exposed without security patches, etc... - making it approximately the same.
How long do we have to wait for the early Teslas to be considered "classics", because they're doing worse than this already...
"Self driving? No, that was only licensed to the original purchaser, you need to pay us $8000 now because we just remote disabled it when we worked out you bought this Roadster second hand. Hope that helps, have a nice day - Elon"
I also have a 2005 car that still runs - should I get rid of it because the company that made it stopped providing any kind of support for it long time ago? Or you know....keep using it because it works?