If you look into many of the "unprecedented events" you'll see that most of them aren't new and some of them are decades old.
Though if the events really are bad and were ignored before, it's worth asking "why?"
Maybe but aren't you in danger of missing the big changes coming precisely because you are inside the bubble?
A political equivalent to "let them eat cake".
As an outside observer to the US it does seem like the pressure has to give somewhere soon at some point (and in a few other western democracies including my own though I think the US is further down the pipe on this one).
I think you're 100% right that there's building pressure and something will give but that's precisely because things haven't changed much. If the general populace decides "no matter how I vote, things don't change" some will lose hope and give up.. while others will look to other approaches.
(And those other approaches aren't usually good.)
There are benefits and drawbacks to both systems. Right now I'm pretty happy with this aspect of the US system. (There are other parts of the US system I'm less happy with—such as the Electoral College.)
They pounded it with demagoguery to get elected but they didn't have anything behind the policy and knew it. They also knew that going forward with their disasters would hurt them even more.
The US media coverage of Trump’s corporate tax cuts really misrepresented how completely mainstream it was: https://object.cato.org/sites/cato.org/files/wp-content/uplo.... While the US nominal rate of almost 40% total was around the OECD average in 1990, the rest of the OECD dropped to just over 20% by 2017. Meanwhile, the US nominal rate didn’t drop at all.
As of August 14, 2019, the United States Senate has confirmed 146 Article III judges nominated by President Trump, including 2 Associate Justices of the Supreme Court of the United States, 43 judges for the United States Courts of Appeals, 99 judges for the United States District Courts, and 2 judges for the United States Court of International Trade.
I have a different opinion. Sanders and to a lesser extent Warren have created massive volunteer networks that do have a pretty big impact, like everywhere. Obama had that too, but it was dismantled when he took office (insanity). There's a good argument to say Obama would have been far more impactful had he kept it going.
Sanders has no intention of shutting down his "revolution" (not my words) whether he does or doesn't get the nomination. There's going to be some serious pressure (like there already has) on congress in the years to come. I don't think the same ol' same ol' will continue much longer.
I don't mean to be a fan boy, but it's pretty phenomenal what he / they have done since 2016, and it resonates with a lot of people. CNN and MSNBC don't talk about it too often, but it's very real.
Don't take my word for it though. Easily researched.