why people do videos like this and think that Poilievre is going to be able to “fix” all this.

Poilievre doesn't have to come with solutions. If you look at the wave of right-wing election winners across the globe since the 10's, the one thing in common is that they tune the voters into "things can't keep going on this direction!" mode, and by presenting themselves as the ones bringing change, they funnel all the misguided fears and hopes.

In fact, I was surprised this video even got to explicitly advocate for the "smaller government" bullshit, because that's veering into solutionizing a bit. But then again, it's the oldest conservative talking point after trampling minorities so the audience will eat it like hot cake.

if it’s propaganda it’s just about sowing doubt.

100%, the whole video screams anti-Trudeau propaganda