This is just...I don't know. None of these arguments make any sense to me. Learning Safari doesn't take away your ability to use Firefox or Chrome or whatever. Using Apple software doesn't create your documents or other output in some magical format that only Apple software can work with. Microsoft stops supporting operating system versions on old hardware as well.

You do bring up good points about DIY upgradability and repairability, but Apple isn't the only manufacturer to do that. Some of it is dicatated by modern design...the smaller and skinnier hardware is, the harder it is to let the consumer repair it.

And you're absolutely spot-on about the Apple ecosystem. I first bought an iPod 15 years ago. (I had a Macbook Pro for a couple of years in there, but could only afford a Windows machine when it died). Then an iPad five years ago. Then an iPhone three years ago. Then an M1 Macbook Air three months ago. Then a Watch three days ago. The further in I get, the more I like it. That was intentional.