Fixing that requires long-term thinking and action. Something that the Greens and others refuse to do. If Stein, hypothetically was elected, at best, it would be a lame duck presidency because she would have no support from any other branch (except for things supported by Putin).

Local elections, primaries, and congressional seats are needed for actual change. That doesn't have the immediate gratification though of visibly pretending to do something, regardless of if it actually helps.