Definitely. We ship the Framework Laptop DIY Edition without an OS under the expectation that folks will bring their preferred distro. We're testing with Ubuntu 21.04 and Fedora 34, and the recent respins of the latter have full Framework Laptop support out of the box.

I'm going to try to install another distro on it. Is there anything I (or the open source community at large) can do to help test or add support?

PoP!_OS would be worth trying, it's built for laptops, could probably do power management well on this one.

The faq says they'll support main distros, but power management with Linux is always not great in my experience, hopefully it works out!

Is TLP not enough? I would be curious to know how else people manage power on laptops here.

I visited the website just to check which distro they were using. I was surprised when I saw the only two "distros" available. LOL