I don't think binder is upstream, nor is the default in many distros. AFAIK support is very limited as not a lot of people use it. In arch it is provided only as a community package (AUR) [1]. This was a major blocker for me when trying to install anbox or waydroid, custom compiled kernel modules is a no-no for me, not because of security issues (which could exist), but because they can break a lot of stuff and fixing kernel modules is not a stroll in the park.

[1]: https://aur.archlinux.org/packages/binder_linux-dkms