I have been thinking of switching to Debian from Pop!_OS and have a Thinkpad X1 Extreme Gen 2 with Nvidia GeForce GTX 1650 - if graphics drivers are an issue, then my wish is dead in water.
Why preinstalled? They are not even preinstalled on PoPOS. If you choose nvidia via powermanagement and they aren't installed, only then they will be downloaded and installed.....
If you think of the hazzle because of offloading (intel by default and nvidia by demand) just purge bumblebee(at least that was the issue before boowkworm) and you have mostly the same experience.
I would play with the livecd for a while first. Even straight ubuntu gave me problems on my gen1 (wifi, sleep, graphics...). I switched it back to win10 and have a Carbon for Linux now.
Makes sense. I went with the Extreme model because I needed to drive one 4K + two HD monitors from it and was under the impression that Intel XE graphics are not sufficient for it - happy to be corrected on this front (Nvidia has been nothing but trouble on Linux).