I don't agree with heroising CK after his death. But at the same time, I don't think you can really draw a comparison between CK (who I didn't agree with or align with) and JS.
CK, as far as we know, was not a criminal and was murdered whilst exercising his democratic right to free speech (a right which Trump now seems to be wholesale dismantling in the wake of his murder). His exercising of 'free speech' didn't involve calling for the denial of anyone else's right to free speech (unlike Trump and far rightists), far less advocating violence or murder against anyone he disagreed with.
Jimmy Saville was an unrepentant serial child abuser who escaped punishment unto death. The fact he wasn't convicted was due to the suppression of his crimes during his lifetime - we all know what he did.
Irrespective of how much I disagreed with many/most of Kirk's beliefs, it increasingly appears he was killed for expressing gender critical views. By that token, many if not most of the posters on the MN feminist board would have met with the same fate had they had the same misfortune to come within 200 metres of Tyler Robinson in an open air space.