I think you'd be hard-pressed to find a LinkedIn alternative. It's too business-oriented for anyone to care that it's under corporate control. In some sense, that's the whole point.
My understanding of Friendica is that it's supposed to fill a niche similar to Facebook. I've never used it though.
I don't see how this can lead to anything good.
The democrats have given ground on immigration every damn election. What it's 'won' is base level of support to put brown people in concentration camps across the political spectrum. The whole "I love immigrants, but if they come here illegally they deserve to be punished" argument can't stand up to the truth that the inhuman conditions in these camps are far in excess of justice.
On paper I understand that the democratic party can't guarantee that every member holds the same view on trans rights. In practice we already have evidence that yes, the slope is indeed quite slippery.