Eugene V Debs is the best example for why that’s not the case.

Dismantling public education has been deliberate, so has the expansion of right-wing propaganda to all forms of media. Both are done at the behest of capital owners to divide the working class

Dems have plenty of options available even as a minority party, they just aren’t doing so.

The Intercept has a left-wing bias but it is quite credible and reliable. You can read more about it on the credible sources discussion https://en.m.wikipedia.org/wiki/Wikipedia:Reliable_sources/Perennial_sources