>Macs can run, Windows, Linux and OS X. You won't get that with the Thinkpad.
Actually, you can run OS X[0], Windows[1] and Linux[2]^ on a Thinkpad. In fact, there are multiple ways to do so for each OS (see links).
Whether you run Windows or Linux on your bare metal, you can run any or all of those OS's (or specific functionality to provide a working environment, e.g., Cygwin) on a Thinkpad.
You are absolutely correct that a Mac can do so as well.
Given all that, I'd say that some of the questions for the OP are:
1. Which hardware is going to get you the most bang (performance) for your buck?
2. Which hardware will provide better long-term utility, stability and support?
3. Which hardware makes the most sense in terms of the infrastructure in which it is used?
^Please note that link [2] does not include WSL2 as an option for running Linux on Windows.
[0] https://old.reddit.com/r/linuxquestions/comments/918gcp/maco...
[1] https://www.howtogeek.com/133515/4-ways-to-run-windows-softw...
[2] https://www.howtogeek.com/170870/5-ways-to-run-linux-softwar...
Edit: Fixed list spacing.