Americans: do what you want in the primaries. Vote for Biden in the general, because he will be the nominee. I am not stoked about that, but that’s the choice our system gives us.

Non-Americans: please, please do a bit of research on how weird and fucked up and fractious our electoral system is before going off on someone for voting “undecided” in the primaries, which is how I voted myself. Compared to the nationally-organized stuff you guys seem to mostly rely on, ours could charitably be described as “intentionally byzantine”.