I only partially agree.
My personal belief is that when prosecutors know that there is a chance of cases blowing up and destroying their careers, as is happening here, they have an incentive to be careful. And likely will be more careful for some time. This is a good thing - even if it helps much less than fixing the system.
That is why in many, many corporate cultures there is an effective policy of responding to problems by publicly identifying a scapegoat and throwing the book at them. It is an easy action that makes a marginal difference for a short time.
So this is better than nothing. Unfortunately it is not very good. First of all the deterrent effect is only temporary. Secondly you get two-tiered justice where defendants who seem likely to have the potential to raise such a firestorm of protest are more protected than defendants who don't. Thirdly the identification of a scapegoat relieves pressure to come up with a better fix.
Therefore I am modestly in support of the current corrective process. I would like to see something better. I will encourage better things. I know the shortcomings of scapegoating. However it is better than nothing. If this is all that this case is likely to achieve, it was still a somewhat useful response.