Not true...
Yes, it is true. Our right to remain silent is now conditional, therefore, not a right.
The court ruled, if you would read the decision, that a person must say they exercising their right: “ …concludes that Salinas’ Fifth Amendment claim fails because he did not expressly invoke the privilege.”
The same court ruled 50 years ago, “no ritualistic formula is necessary in order to invoke the privilege.” This is at complete odds with today’s ruling. I didn’t know a right could be voided by parliamentary procedure.