While Tulsi is busy calling Hillary corrupt, Warren says this:

[TomCADem]

7. Bernie and Tulsi Both Get Attention By Attacking Democratic Allies

This is their schtick similar to Dennis Kucinich. That is the price of admission. If you are happy to attack Democrats as the "establishment" even though Republicans hold the Presidency, the Supreme Court and the Senate, you get air time. Bernie has happily accepted appearances on Fox, and this year you have Tulsi making appearances on Fox.

The problem this creates is that it helps push the false equivalency narrative that both sides do it. Trump was able to run with this narrative to the Presidency by repeating Bernie's talking points that legitimized the idea it was the Democrats who were corrupt, thus you need an "outsider."