I’m pretty sure sid also has package freezes for when it moves up to testing. In general Debian’s purpose is as a stable distro and it might be better to use a distro that focuses on rolling release for bleeding edge packages.

Can windows also break grub on gpt or only legacy mbr?

It’s true that it can be a powerful distro but I’ve also heard from some users that the advanced-level documentation is lacking and only limited to forums and source code. I think maybe if the documentation was more thorough I would try nixos.

OpenSUSE Tumbleweed. It’s surprisingly stable for a rolling release distro.