I've been using ThinkPads with Linux since the T410, T420, T430, T480s, and several others. For me, they've consistently delivered an "everything works out of the box" experience with Ubuntu and/or Fedora, including things like SmartCard readers. I'm currently on a Lenovo X13 Gen 6 (AMD), and the only component that required any tinkering was the 5G WWAN due to FCC unlock issues (see: https://github.com/lenovo/lenovo-wwan-unlock/issues/68 ).

One thing many people don't realize is that some Lenovo models can be ordered with Fedora pre-installed. That's a pretty strong signal for Linux compatibility.

I've been watching Framework for years, and among my Linux-using colleagues we have ThinkPads, Frameworks, and Tuxedo machines, so comparisons are easy. I really want to like Framework, but recurring firmware issues, noise (!!), and the lack of built-in 4G/5G antennas have pushed me toward Lenovo every time. That said, I do like the modular idea. I even use a small USB-C adapter permanently to protect the port from wear, almost all docking/monitor issues I've seen over the years came down to worn cables or ports. In that sense, Framework's modules are genuinely appealing.