or you can post a selfie where you’ve written FUCK THIS on your forehead and encourage people not to validate this kidnap-and-bus process with participation.

Has not voting/voting third party ever been interpreted as that? Look at 2016 -- all the takes from the mainstream or the Democratic establishment were "those folks helped put Trump in the White House." It doesn't matter whether that's the reality of it; if you're trying to send a message, whether you're successful depends on how the message was received.

I think that strategy could work if we had (1) coordination of votes, (2) enough people on board to make it matter, and (3) a unified leftist messaging apparatus that said "this is what we're intending to accomplish and why we've chosen to do this." But I don't see any of that except maybe (2).