The Framework 13 inch model should be plenty, especially if you want to dev on the go. Much more lightweight and smaller, and you can connect it to external monitors if the screen size is not big enough. Also, you shouldn't have issues running Linux on either laptops.
Instead of going for the 16 version, I would use the extra 900-1000 euros (that's the amount I saw I could save between the two almost maxed-out models) to make a dedicated server or mini-cluster to run your workloads. Deploy Kubernetes or Proxmox on it, and you'll also get some more practice on it outside work if you want to run stuff for your home lab. That is only if you don't want to game on your laptop, but I'd still put that money aside to make a desktop.
Wow, some of the comments on that article saying Google should have made Android closed source are mindboggling. They realize they never would have had their current worldwide marketshare if they did that, no?
But maybe if they did, we would have had more people working on true linux phones ๐ค I'm a bit torn on this one haha.