Do you have a source for that?
It also seems like he succeeded, because the original and all reuploads except for some ultra low-quality copies are gone from youtube.
And also, the original lecture isn't a reupload but found on the channel of his own university (both at the time of the first and the second lecture): https://www.youtube.com/watch?v=d-7o9xYp7eE
Damn, you need to watch it again. He only updates the advice to say that one needs to be explicit about their intention to remain silent and await an attorney.
I didn't know that, that's pretty interesting.
> Because in the real world that strategy is more likely to get you convicted after all.
I don't think that's true. That's true for not cooperating, but you should do so with a lawyer. You shouldn't' talk to police until you get a lawyer. That's all.