Prudie's defence of Johnson seems to be based on a case that Johnson himself wouldn't dream of trying. Ditto, jourdain, when she refers to the restrictions as "idiotic" -- hardly a defence, especially when it was Johnson himself who helped shape them, approve them, and regularly defend them on national TV. Maybe the guidance was idiotic, but it matters not for this question. The fact is that there *was* this guidance; the fact is that staff at Number 10 did not follow it; the fact is that Johnson himself was fined for breaking the guidance and rules.
Even referring to this as a "witch hunt" misses the point spectacularly. Firstly, witches are generally entirely innocent; again, however, there is at least one part of the charge that Johnson is undoubtedly "guilty" of, namely that he misled Parliament by saying, on the record, that the guidance and rules were followed "at all times". He himself has conceded this point, mainly because it's undeniably true.
Secondly, the phrase "witch hunt" has been so horribly co-opted lately to reverse the power dynamic that properly defined witch hunts. Those accused of witches were the lonely old women, or the young and isolated, or those whom the village had taken a dislike to. The power dynamic, in other words, was stacked against the "witch". It's difficult to imagine someone further removed from this position than somebody who, until recently, held the highest office in the land, and who even today commands a pretty decent amount of public support, and who will enjoy a pretty lucrative career outside politics if it gets that far. The worst that will happen to Johnson is that he is forced to undergo a by-election. Since he would be allowed to stand in said election, it isn't even clear that he'd lose it, and all this would amount to is a minor interruption to his political career. Indeed, winning that by-election might prove quite the PR coup.
Backing up, anyway, the only question to address is this: did Johnson know (or, did he take adequate steps to know) that what he said to the House about the guidance/rules being followed at No.10 was not true?
It is not about the wisdom of that guidance. It is not about the role Johnson played, or didn't, in organising the rule-breaking events. It is not about whether the statement itself was true. It's not about any other issue. It's just about that. Did he wittingly mislead the House?