My past couple of laptops have been Thinkpad X200-series and even Lenovo has managed to kill the Thinkpad upgradeability.
It seems to apply across the entire Thinkpad range, as they've removed easy access to drives and memory and you now have to remove the entire bottom to access either, rather than loosen a screw to slide out the drive caddy. Obviously with M.2, things changed, but even so, there's no longer a partial opening to even access the SO-DIMM slot, if there is one.
Gone are the user replaceable batteries as well, my current X250 has a small internal batter plus a huge rear mounted one to give me the best possible battery life. You also had a choice here, as there were multiple sizes of the rear battery. It was even possible to swap the rear battery without powering off the notebook if you had a second rear battery.
More recent models that are called ideabooks or thinkbooks have done away with the "nipple" which is one of the main reasons I like the Thinkpads. Admittedly their trackpads aren't terrible any more, but I tend to have problems with a lot of touch surfaces, they simply don't like my fingers. Even older (10+ years) finger print scanners didn't work for me...
All of this in the name of slimming down and saving another 20g here or 30g there. Sure, I don't miss my old 4.5kg Dell Inspiron from back in the days, but at least I could strip that one down and build it back up. Upgraded the PII CPU in it, which was no mean feat.
I guess we're a minority here though that actually can and will fix our on stuff. We live in a throw-away economy, you're supposed to get a new one after a year or two anyhow, so forget about fixing it or upgrading it...
I'm wondering who's going to fix something like this when it breaks...
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One other thing, why is it so hard to buy certain configurations of laptops? Take Lenovo again as an example. If I want a certain model with a discrete GPU, then I have to upgrade my CPU as well, which adds another $300 for what? It seems like BTO isn't really BTO any more.