Savile did not start off with minor heat of the moment altercations and work his way up to paedophilia, necrophilia and serious sexual assault because no-one ever pulled him on on it.
Clarksons punch was never covered up, was dealt with, and was never at risk of escalating to crimes similar to Savile or acting as a example for others to follow. There was never a point at which the two situations were remotely comparable.
That some fans will suport the object of their fandom even in the face of all the evidence is irrelevant. That’s the nature of fandom. In any case Savile’s public support was never tested in that way because what he did never came out until he died.
As I said in a previous post, if there is a point to be made about letting famous people get away with or covering up crimes that then escalate and spread then there is no shortage of examples out there. The Clarkson incident simply does not make that point. No more than Will Smith, Ben Stokes, George Michael etc. etc. There is no path from such incidents to Savile. The culture that allowed Savile to do what he did is nothing like those other cases and the biggest indicator of that is that we know about those other cases and they have been dealt with, now, while the people are still alive.
The point of not letting people get away with things because it might get worse is fair enough, also that a cover up culture is bad. I agree fully. But the example given is a shockingly bad one, an irrelevant one and a borderline offensive one.