"I'm referring to the right to not self-incriminate."
Also not in the constitution.
Cite otherwise.
The right the article is talking about is the fifth amendment, which only says "nor shall be compelled in any criminal case to be a witness against himself".
Not the same as a general right against self-incrimination (and no court case has ever held otherwise ...)
"What you said is untrue twice over. "
Again, in what way? You are the one who refuses to actually back up your statement that this right appears in the constitution, or was understood to be primary constitutional right.
(Spoiler alert: It hasn't been. There are plenty of state and other supreme court cases where silence was allowed to be used against people, and until the time of Miranda, nobody believed this was part of the fifth)
" It's central to this issue and it does "need" to be invoked."
I'm still not sure what you are talking about. I know what the article is talking about. The article is talking about an implicit right to silence created by the Miranda decision that the court found to be necessary to protect people, and its gradual erosion.
" and the gist ever since is that one must invoke the Fifth in order to be perceived as protected by the Fifth at that time. That's what the article is about."
See above
It is only in the past 50 years that any court has ever held the fifth amendment gave you the right to remain silent, and in fact, precedent was the exact opposite for centuries.
You are of course, welcome to look up the caselaw history if you don't believe me.
It simply was not understood to be a primary constitutional right, contrary to your assertion. There was not even anything you could invoke. Prosecutors were free to use your silence against you
Talking about it as if it has always been an understood part of the fifth amendment does nobody any favors.
It hasn't. Again, you won't find any serious legal academic who argues otherwise.
Here's an unbiased view by a preeminent con-law scholar:
http://www.volokh.com/2013/06/17/do-you-have-a-right-to-rema...
Note the section on pre-1965.
The truth is this is the problem with rights whose plain text does not appear in the constitution, like privacy, like the exclusionary rule, like a lot of things -
they tend to erode over time.
But the solution to that is not to pretend they are written into the constitution and then lament a changing ideology of the supreme court, but instead actually put them there.