Hmm, AMD's AM4 socket mobos can take kind of a lot of different Ryzens (though to be fair you might need a bigger PSU I guess). I guess maybe it would be more precise to say that most laptops aren't very futureproof because they've become increasingly everything-soldered, so it isn't even just a question of not being able to drop in a better CPU or GPU at some point, but of not being able to replace a bad SSD at all?

I agree it rarely works out for CPU, but SSD and RAM often makes sense.