Earlier quoted context omitted.
One party champions unrestricted capitalism for billionaires, the other party is in the pocket of pharma, banks and other large corporations (and the management-class that work in those businesses). Everything else they say is trying to sell you on something to try to buy your vote. We have one party of the 1% and another party of the 0.0002%.
I think that is over-simplistic, at least since the emergence of a) a genuine progressive faction among the Democrats, small though it may be and b) an insane faction that's taken over the Republicans who seem to mostly represent outspoken racists.
If the progressive Democrats could take over the party and control it then I'd agree with you about a), but effectively what the Democrats can do is controlled by Krysten Sinema, not the progressive wing.
And both Trump and the progressive wing of the Democrats shows how untenable the current situation is, and how insufficient the Democratic party has been.
If you start to view the Democratic party (aside from the progressive insurgents) as being bought for by large corporations, and then understand that all the failings and excuses of the Democratic party are really just delivering to the customer what they want, it all makes a lot more sense.
And when it comes to the failings of the Democratic party -- like Krysten Sinema -- the trick is to stop going "oh if only she wasn't in the way we could have fixed everything, we have failed due to this externality" to realize that she's playing the role that the people who have bought the Democratic party want her to play and she's a feature, not a bug. And there's always been an excuse like that for the past 30 years.
Hopefully the progressives do eventually succeed or else we're likely to get some actually competent fascist on the right wing.