I also had an x220 (I actually keep it around my office as a spare). Adding a second SSD to the WWAN slot required basically a complete teardown of the machine. The swappable battery seemed nice, but the battery in mine falls out because the locking mechanism broke.
For my use I actually prefer the newer style thinkpads. If I need to replace the battery I'll deal with the 5 screws on the bottom. Regarding the t490 RAM, it's like my T470s, one stick soldered and one DIMM slot.
I'll also add that although Lenovo is far from perfect (superfish), they do have a history of correcting bad design decisions based on customer feedback (see the t440/x240 trackpads).
Other brands have faired a much worse fate. AEG for example was once a brand which stood for good german quality, nowadays everyone who wants to use that name only has to buy the right to do so from some turkish company.
Beko use standard components (except the main board) found on dozens of other brands and most of them only require you to remove the bottom cover for access.
To be fair, Beko branded machines are pretty good. Just not that good. Especially for the premium price they want for some of their other brands.
I've worked on several Beko washers that overheated until the glass on the door cracked (flooding the place). But that's nothing compared to some Miele that will power the heater even if there's no water, getting it red hot and risking a real fire. Ditto for Indesit dryers.
I've heard this line of thought repeated alot--"Thinkpads went to crap once IBM sold them to Lenovo"--but I could swear I read an article stating that the Thinkpad team went to Lenovo as well, such that the same people still work on them.
I'll edit my post if I can find the source.
The 2012 is still going pretty well for me and quite useful as my #2 dev machine. I have a much higher powered desktop. I'd like a new X1C, but won't replace it until it breaks - and currently it looks like I better not hold my breath for that to happen; it's holding up incredibly well.
How's that for reducing waste; buying top spec laptops and making them last not 2, not 3 but 7 years and going.
Sadly every brand has been imitating the cool kid.
Case in point: Thinkpads.
Thinkpads used to be an absolute beauty of engineering. I have an old x220: You could swap battery by hand, change the memory and hard disk by undoing one single screw, swap the keyboard by undoing 3 screws.
I also go a new one recently, a T480. Changing memory and mass media means taking the whole bottom off, which means which is almost impossible to do with breaking some small plastic tabs. Changing the battery and keyboard is close to heart surgery.
Their newer model downright solder memory in the machine, making it impossible to upgrade or repair.
Another example, OneOps was one of the few company making sane decision, their latest model does not have a jack for headset.