Even granting your ridiculous claim that Warren has stolen Bernie's identity, that wouldn't be an attack or critique. Bernie is generally being ignored, not attacked. You know, the whole media blackout thing. The distinction is important because you can't ignore away a whole general election campaign, so should he win the nomination, he will start being attacked on bad faith bullshyt like Warren has been.
Except the mainstream media hasn't turned on Liz. Whatever "bad faith bullshyt" you're talking about has been mostly twitterverse stuff. I don't see it anyway other than the pregnancy one which was definitely a bad reach, but I don't recall it being in the mainstream media unless I'm mistaken.
I think you just call any critique of Liz "bad faith." As for your defenses of her, well they're...interesting. For instance, you took me to task for echoing one of the most widely-criticized aspects of her M4A plan: that is requires immigration reform, IRS reform, and labor reform to be functional. You basically said that criticism lacked bold vision for reform and other flowery stuff. Then when she folded and pushed that half ass Buttigiegcare, your defense turned into they're not going to have votes for M4A upon her entering office so who cares, just get the most you can get. Huh?
Anyway, her M4A was panned by critics from all over the political spectrum and they mostly revolved around the same criticisms: workability (requires other large legislative reforms to function, no mechanism to stop head tax avoidance/increases), the regressive nature of the head tax, and the timeline of it.
You called it all right wing attacks and suggested that somehow Bernie Sanders, the Jacobin type left, democratic socialists, etc. all became right wingers overnight (funny how such an unlikely thing happened) and you credited it all to Matt Bruenig. Never mind that people all over the net were sharing the same basic criticisms, they were all co-opted by the powerful propaganda of Matt Bruenig.
Your rationalization of Warren losing steam in the polls after that was simply that everyone criticizing her from the left was a Bernie stan who also happens to be a part-time crypto-Republican and they all formed like Voltron at once on the Internet and systematically took her down with bad faith attacks. And you blamed the media in there a little too.