Did you read to the end of the post? No one can actually follow the ITG script.
Maybe if you're a professional lawyer. Everyone else will screw it up somewhere. Following it closely requires an attitude regarding cops somewhere between "Officer Friendly is only here to help" and "these pigs might kill me". That zone on the spectrum for "these guys are cleverly trying to hamstring my lawyer before the trial" is razor thin.
Those on one side will cooperate because they earnestly believe that the innocent do not get punished. Those on the other will cooperate because they believe that resistance is futile in the face of overwhelming force without any form of restraint. The ITG stance is pretty much exclusively held by people who will probably never have the opportunity to try it out on real cops.
Everybody out there in the real world formulates their strategy based on their prior experiences with real cops, rather than activist videos.
> Am I free to go?
> Am I under arrest?
> Why am I being detained?
> I do not consent to searches or seizures. I will not answer further questions without the assistance of legal counsel.
I hate to break it to you, but that's a classic example of "Internet Tough Guy".