Cummings made no secret of the fact that he didn't like or trust the media. So they wamt to destroy him. See also Meghan Markle
I don't doubt there's an element of that - he tried to exclude certain sections of the press from No.10 briefings, probably assuming that the others would just bow down to him because they wanted to remain 'in'. Instead it caused a mass walkout of journalists from all sources in support of their colleagues.
You talk as if there's no story here, 'nothing to see' but this story is massive! A key member of the government, one of the people responsible for introducing the lockdown rules, blatantly broke those rules. Instead of apologising he has doubled down and the rest of the cabinet and the PM has been dragged into it causing a far bigger story and much much more damage.
Yet here you are bleating on in his defence and looking for anyone else to blame - what a waste of your energy.