All of the factors they've mentioned do allow you to extend a stop for dither investigation. This was likely just dropped cuz the judge or DA doesn't believe in interdiction stops.

At the time of pulling the guy from the car the only info the officers had here were:

Convicted felon speeding in a rental car with a passenger. That isn't really reasonable suspicion to pull someone out of a car and get their story to see if it matches up.

All the evidence they gathered that led to them prolonging the stop is completely justified and allowed still even with the new rulings on extending a stop.

If you read the case of Rodriguez v US you'd see a lot in common with the above video.

All the evidence they gathered that led to them prolonging the stop is completely justified and allowed still even with the new rulings on extending a stop.

And in fact you're just wrong:

We hold that a police stop exceeding the time needed to handle the matter for which the stop was made violates the Constitution’s shield against unreasonable seizures. A seizure justified only by a police-observed traffic violation, therefore, “become[s] unlawful if it is prolonged beyond the time reasonably required to complete th[e] mission” of issuing a ticket for the violation.

That is straight from the holding of the case.