I mean, Bernie's foreign policy sucks as well. He has a better instinct on it than Liz does, but the amount of daylight between his FP and her FP really isn't as large as certain Bernie fans on twitter make it out to be. But anyway, this is America, there is no candidate (except for Gravel) who is going to overnight eradicate the military industrial complex or America's imperialist underpinnings. And Liz is a cosponsor of M4A btw.
This type of thinking is dangerously close to validating the Bernie Bro cult of personality charges that come from centrists. As progressives, we should follow principles and values, not engage in conspiratorial thinking to justify Bernie getting outworked and outflanked. His poll numbers are dropping because he's been running a pretty lackluster campaign so far. Liz's numbers have been rising because she's been consistently killing it. She's simply running a better campaign than him. If Bernie wants the nomination, he needs to earn it. He's has been doing really well over the past few days though, and I hope he keeps it up. That education platform was what I've been looking for from Bernie this whole time