I believe we should strive to either not have banks that are too big to fail, or have those banks that are too big to fail have enough capital they will never fail. I do not understand why anyone would disagree with those simple points, but for some reason they do.
If we could just move on from debating what we all should agree on, we could move on to the tough issues with how to implement the simple points we should all agree on. The devil is in the detail here, and we will be endlessly debating the details and implementation... if we can just start debating them.
As for what was done in 2008, most of it was necessary to save America. What we did in 2020 is not as looked at, but in many ways was far crazier. I am more interested in what we did to get into the holes, not the desperate actions we did to get out of the holes.