Do you blame the democrats for nominating Hillary Clinton, or the independents who didn’t fall in line?

Both.

… to fall in line if a Progressive wins the nomination?

Unless they’re a DNC candidate, they won’t.

Do you know how many people you need to convince to move over to one, not several, third party?

Let’s look at the 2020 election results:

81,000,000 Biden
74,000,000 Trump
 1,800,000 Jorgensen  
   400,000 Hawkins  

Are you going to convince seventy five million people to choose one single other candidate?

And what then? You realize if they did win, they just become the new establishment, right?

What happens when someone like you doesn’t like the way Hawkins handled the mess at the border that Trump left and starts another “shit sandwich, fart taco” fiasco about moving to a 4th party?

The green party got 0.2% of the total vote, man. That’s not enough. That’s not nearly enough. You need over 50.0%, and they were aiming for 5.0%.