Uh, no, I didn't read the screen of the mobile phone the person is holding in the video, and it's pretty funny that you did. But I just looked, and "she" is "Karen E.", on a list of names provided by the campaign, for whom there is a boilerplate script. The video indicates that a canvasser went to Karen E.'s door, recited the script saying "I'm a volunteer with Obama for America", and was told by Karen E. that she supported Obama. That's exactly what I said was fine. It wasn't "so my mom is in, but my brother told me last week he's leaning Hillary, and I overheard my neighbor talking positively about Romney."
All of the other interactions you describe, whether at the door or at the store, are ones in which the target is on notice that they are talking to a campaign representative. You continue to fail to grapple with what the Bernie email asked for, which was reports on what you already know about your friends and family and anyone else. That is, in a personal capacity, and not with notice that it is a conversation with a campaign representative.
Maybe other campaigns do that too (although if they do, I'm surprised that you have no other examples of a similar request and are clinging to the screen of the phone in the Obama video). But maybe it is standard practice. Maybe you've done it in your vast, impressive campaign experience. Hell, I'll stipulate to that. But it's irrelevant to my view of the practice as creepy and inappropriate. If Obama sent emails asking my neighbor to tell the campaign how I was leaning, that was creepy and inappropriate. If Warren is doing it, that is creepy and inappropriate.
A campaign should instruct its volunteers to identify themselves as with the campaign before collecting any information from a target. If that's not standard practice, it should be. If a volunteer ignores that instruction, the volunteer is the asshole. If the campaign asks for info gleaned from other, personal interactions, the campaign is the asshole.
And your whole "you just wanna argue on the internet!" thing is pretty embarrassing. You dredge up this complaint from months ago to attack "shitlibs" for hypocrisy with Warren, then argue and argue about normal canvassing and what's on the screen of the phone in the Obama video and other ridiculousness, without ever addressing the one point I've actually made. You calling someone else out for just wanting to argue is Trump-level lack of self-awareness.