This is the laptop I used for work from early 2024 to early 2026. The laptop is leased, and was built on late 2021.
Linux has several problems:
https://github.com/manueljaeckle/thinkpad_x12_fn_switcher
One of the main reasons for picking this laptop is that it's very light. The laptop with keyboard weighs 1.1kg.
The keyboard is detachable, which has pros and cons:
The keyboard is very good, but slightly inferior to a full ThinkPad keyboard:
However, it still is a pleasant keyboard to use.
The screen looks good. But because it is glossy, sometimes I have issues with reflections.
I have only used the battery when it was three years old already. I can use the laptop for about 4 hours of somewhat intensive usage (some calls, working with compiled languages and LSP).
Unfortunately, the leaser did not deliver a pen.
Besides what's been mentioned, I do not find any other problem with the laptop.