I actually agree with the advice here — “let Bernie Sanders and the other aggressive progressives take command of the Democratic Party.”
Ever since Progressives launched their strategy decades ago to take over and transmogrify the Democrat Party into a true Socialist Party, they have had this end in sight. They have almost completed their task. There are scant few true Liberals left in the Party. It’s time for the Democrat Party to cast off the fig leaf and stand fully exposed as a creature of the Socialist Left.
You know you want to; just do it.