I've been considering moving from a mbp to an x1 for a while now, but a couple things are keeping me from it:
- mbp isn't dead (yet)
- x1 is made in china, human rights issues
- x1 is less repairable than other thinkpad models such as t14 or p14 (which are still made in china, however)
- now there is linux support for mbp for dual booting