Most people that vote third party wouldn't vote otherwise. Assuming that every vote for Jill Stein would've gone to Hillary is quite the assumption. I always vote third party, so assuming my current vote for Jill Stein would've gone towards Harris instead is just dumb and wrong.
Is this the democracy Trump is threatening? One where you're berated for not doing the duty of voting for a candidate you hate and next time they'll get an even worse one? Where voting for the candidate you actually want is treated as sabotage?
The GOP gives their base the candidate they want, if the democrats don't, thats their own goddamn problem and those who vote blue no matter who should think about the responsibility they bear in making their own party the fascist lite option.