For now, I still use my MBP when I travel. I could probably do OK with the new Air if I wind up needing to upgrade. I would prefer to have 32 MB of RAM though because I run a lot of VM's and Docker images and having the extra RAM for that helps.
Anyway, back to my original point. PopOS has been a pretty easy transition and it worked fine on my custom build. You do not have to use System76 hardware to benefit from using it.
It's not like it's the law that you need to buy Apple hardware.
Honestly, I won't say the transition has been entirely painless - it does take time to adjust to a new operating system, but I have to say, my biggest regret is that I didn't ditch Apple's computers sooner. I love my iPhone but honestly it does feel like Apple just isn't all that interested in their desktop / laptop computers recently.
In college I learned that while Americans say "Kicked the bucket" or "Bought the farm" for 'died', Austrians say "Handed in their spoon". Which is farm more evocative IMHO.