Nothing recent about it, Miranda only deals with the admissibility of statements in court and that has been well established for a long time.
If a felon gets arrested and tells a police officer that they have a gun in the glove box the gun is still admissible in pursuit of a firearms charge. The statement of the felon that they have a gun in the glove box is inadmissible because no rights were read but it doesn't preclude the firearms charge. There is no fruit of the poison tree exclusion because someone wasn't read their rights. Miranda only has to do with admitting testimony in court, if it isn't given then the testimony can not be admitted.
The exceptions are few and mostly edge cases involving imminent danger like when there is a live shooter or terrorist threat. Plenty of debate about what constitutes imminent danger but generally not all that important to your average arrestee.
It doesn't violate your civil rights to not have Miranda read. It doesn't mean that the dumb things you might say to the police can't be used to gather evidence that you have committed a crime. It's not a get out of jail card to if your rights have not been read to you.