I understand the sentiment, but the comparison with Apple and the Sega Genesis is flawed.
Microsoft has been very good at supporting backwards compatibility with other products, and Apple has EOL’d products too soon as well.
Open a 30-yr-old laptop with Microsoft Windows 3.0 and, oh surprise, it also works… just like your Sega Genesis! Plus nobody said that the Surface Duo was going to stop working. Store it away for 30 years amd turn it back on. I’m sure it will work just fine. Just don’t attempt to connect it to the Internet 18.0.