Key here is the word "opponent".
That you'd rather one opponent to another doesn't address the tendency to recognize one as an opponent and the other as someone who must be defended at all costs.
On same issues.
Because organizing ain't just about the issue. It never is.
Is about the commitments that those whom would organize carry with them. Idea that you can just slot one opponent in for another and not tangle with those commitments is, at best, foolish.
But ofc, AOC also has commitments.