Is SE still able to resolve the matters of the present mess quickly?
Not at all. The real problem is the huge gap between community and company. That gap grew over years (not days, or weeks).
And when a relationship has that much deteriorated, it takes (almost) equal time to repair things.
There is nothing harder to fix than loss of trust. And that is exactly what we see here.
Long story short: Stack Exchange Inc. can do nothing to fix things quickly.
Instead: they have to walk their great talk, constantly, for many weeks and months to come. The slightest mistake can undo 5 great steps easily.!
Just one example: the other day, they announced the new ideas regarding dealing with moderators. Good approach. The next day, I figured that version one of the "CoC FAQ" got deleted, as they put out version two. Alone that caused a lot of churn, for no good reason at all.
And just to be clear: of course Stack Exchange Inc. can and has to do a ton of things. But nothing they can do quickly will resolve things completely.
We need patience, and they, for heaven's sake ... need to stop digging the hole they put themselves into!