I'm with Andrewism on the whole "left unity" thing. The left never was, never will be, and doesn't need to be unified. We can just collaborate (or not) with those of other political persuasions on a per-project basis.
The reason tankies push "left unity" is because they plan to be in charge of the unified left. Fuck that noise, we don't need it.
Pretty sure we're already defederated from grad. We don't have an instances page yet where we could check, but that's been merged into kbin's code and should be available next time the site gets a version update.