Miami was an anomaly, the exception that proved the rule. The analysis and breakdowns that I've read essentially said that the 9mm Silvertip performed as expected, Platt had a mortal wound when he got out of the vehicle. Blaming the caliber was a scapegoat rather than racking it up to a problem with the fact that they had poor tactics and planning and were going up against a rifle with handguns. And the biggie, dedicated opponents. Platt was a combat veteran from Vietnam (US Army) and Matix was a former Marine and US Army Military Police.
You could as easily place the blame on military veterans. Or after the N. Hollywood bank robbery/shootout, decide that the police need full auto 7.62x51 rifles with armor piercing ammo at all times.
And as was said in the prior post, bullet design has come a long way since 1986.