Throughout the history of politics, politicians have been having affairs, speeding, doing all kinds of "wrong" things that have no bearing on us and should be of no interest to the public.
Unfortunately the twitterisation of politics has spread political discussion beyond those with the requisite cognitive agility. This means it's been reduced to finger pointing, angry shouting and faux outrage.
At worst he broke a minor, pointless rule that rarely (if ever) ends up in a small fine. It's nothing, get on with your lives, I'm sure you all have more important things to think about.