I don't see how that risk is any greater than any mailing list potentially forwarding copyrighted material.

As long as the instance would comply with any relevant DMCA request, it seems unlikely that legal action could be taken against them.

Of course not! It's not Ukraine's fault that the Russian Federation invaded and demanded they give up land.

There's nothing inherently racist about using the term in the context of customizing a desktop.

So you want Matrix?