Serious question - is there any reason why naming things with consecutive simple numbers isn't the best approach?

WiFi 1, WiFi 2

...

MacBook Air 1, MacBook Air 2

...

MacOS 10, MacOS 11

I know some of these are already named this way, they're just examples.

Using the year would also be a good (or even better) approach, as it gives you two pieces of information.

I understand that it may not be the best marketing approach, but it would make life so much easier for consumers - if I need a new anything I want to know exactly which is the latest, if I look at second hand items I want to know how far behind it is quickly, without requiring extensive research.

When buying an iPad for instance it took me ages to figure out how far behind the models I was looking at in eBay were...