I mean the frustration is real, but the channels are what are accused of being engineered.

The don't vote and protest vote crowds are basically purpose built to make it as hard as possible for America to even slow itself down, let alone begin reversing course.

"I have serious objections to the major legacies of discrimination and failures to address poverty in this country! Let's take the exact actions that make it more likely for power to end up in the hands of the people who think the problem is we're not doing enough of that!"

That is the narrative people accuse Russia and China of spreading, and it's hardly a coincidence that this crescendos in exactly two times, 1) just before an election, and 2) just after a major consequence comes down as a result of the election that was meddled with.