The “mass” is small and more importantly, located in safely blue states anyway. I’m extremely liberal and I accept that these presidential elections are never going to be about me. I still vote in them because I’m not a moron. But I put more of my energy into the Democratic primary, always trying to tug the D party left. And I focus on state county and city ballots where these ideas are much more in play.
That’s the adult move here. The teenager move is to vote 3rd party or not at all because the political world hasn’t rolled a red carpet out to your doorstep.
The fact of the matter is that the parties are arguing over a small slice of swayable or “undecided” voters in a small slice of states that are in play ie: “swing states” and each party is honestly focusing on a subset of swing states they think they can win.
The result is that their messages look really odd at times and don’t always line up with what the majority of their party want. Because the majority of their party are safe votes. They’re going after the wingnuts in the middle and on the margins, few as they are, dumb as they are.
This is a far more obvious explanation than “she’s in the pocket of Big Oil.” A lot of Pennsylvanians work for Big Oil. So there is more going on right in the light of day than the clandestine bribery which by your own admission you have no evidence for. Occam’s razor, here.