Sure, that's a story from 1983 but it is in direct conflict with facts. I have owned several powerbooks, macbooks, and macbook pros and up until fairly recently they were all upgradeable with respect to RAM and drives.

It's not about memory specifically, but about their principle of trying to push the boundaries of how much you can do to prevent upgrades and service.

I don't think the linked discussion about the earliest Macs in the early '80s not having extra peripheral slots is saying the same thing as consumers being able to upgrade memory and storage.

To the best of my knowledge / memory / experience, all of the Mac models introduced prior to the Air in 2008 had upgradable memory and storage.

Was it really bullshit? I dare say that if you look at home computing platforms available in the early 1980s, most had no first-party support for third-party memory upgrades.

Except Apple ][ for which there were plenty of ways to upgrade.

Acorn certainly did.

I had a Mac laptop (don’t remember the model), earlier in the century and upgrading the memory in it was simple.