If you're interested in seeing how Pelosi is consolidating power, the post itself is worth a read.
In any event, I'd guess that a more Speaker-controlled House is a good thing for the progressive movement in the long run, for the same reason that the filibuster is a problem for progressivism overall. The fewer places there are where big legislation can get caught in bottlenecks, the better it is for the people who want to pass big new social programs. That's why Europe, with its less bottlenecky political systems, has a much more generous welfare state than we do. Sure, we