i've been a long-term thinkpad (T530, X1 carbon 2016, 17) user. just bought x1 carbon 2021 for work and realized in shock that they changed the keyboard. while i was frantically searching which model has the "old" (i.e. x1 carbon around 2016/17) keyboard, i found this article which says x1 extreme gen 3 is the last one. ordered one and the keyboard is honestly no better. when i'm typing i frequently miss keys - it's just a weird feeling. absoluely devastated - what is lenovo doing? what's the point of buying thinkpads now?
the author also says that this keyboard is still better than most ultrabook keyboards, but i really don't know how much worse it can be than this. it feels like typing on a macbook in my opinion. very shallow travel. moreover, the trackpad has a weird, slippery texture, which makes it hard to use as well. so i disabled it and just use the trackpoint.
anyway, just a heads-up for people who thought x1 extreme is better. no it's not, at least not where i'm from.