I think a Trump 3rd party run is the only surefire Democratic victory. I believe that a Trump GOP run will mirror 2016 in which the popular vote is a razor thin (yes, I'm calling a 3-4 Million lead razor thin) victory overshadowed by the electoral college.
I seriously worry about the Cornell West Green Party campaign splitting the Democratic vote for Biden. Biden isn't my first pick, but I would have preferred to see West try to primary Biden and then once West gets any traction, platform planks can be transplanted into the Dem platform. That is not even a possibility for this 3rd party approach.
Also, Jill Stein was a Russian shill to disrupt Sec. Clinton so I can't believe Cornell West has thrown his lot in with the Green Party.