The traditional left tends to attack producers versus consumers.
Warren wants to crack down on banks that invest in fossil fuel production. At the same time, I think something like a carbon tax or less incentives to drive and more incentives for public transit could work better.
I guess people, on the left, shouldn't grumble when gas prices go up since I hear that fuel production is slowed by the disinvestment in fossil fuel that has happened so far. Warren seems to want to ramp up this disinvestment more.
Hurray for higher fossil fuel prices, but this may not be that well understood by the consumer. One danger is return of Republicans to Congress in the next election from angry consumers.
We need to think in terms of the "big picture;" not just each of our selfish little pieces of it.
Some of these reforms, that she is proposing, might not be a bad idea, however. Transparency, so we can see where our financial institutions are still investing in fossil fuels. Yes, it's good to have eyes open.
Eventually this has to effect the consumer. It's naive to think the consumer can avoid consequences. This is where everyone, from consumers to big business to government needs to transition to more walking, bicycling, public transit, electric vehicles, smaller more efficient living spaces, better city planning and so forth.
Business needs to be pushed in this direction, of course. Just pulling some fossil fuel production cards out from under the delicate card house of American society is problematic. It's problematic if people don't see these things in context of the big picture. The big picture being everyone being less dependent of fossil fuels.