"if you want our votes" is the most toothless threat one could possibly make in the current political environment, no matter what your single issue concern is... abortion, climate, guns, arguably the very color of your own skin, you're lbgtqrstuvwxyz, you like books, you like money... whatever the hell it is you want, you got exactly one option on the ballot for it.
How many of these people would actually not vote Biden? Likely exactly zero of them, because God forbid trump wins, every single one of these voices will get slapped on the ignore list for four years.
Every single climate focused individual should probably vote green party, but if they all actually do, they're fucked, because theyre blue team, and the blue team won't beat the red team without them.
Toothless threat, and it's going to fall on deaf ears... Bidens campaign machine is going to be focused on a couple key states, and the only action that's going to be taken is to throw money at them...