Looking at all the comments, this is how I see things. Most (but not quite all) politicians lie, at least to some extent. Most (but not quite all) politicians are principally motivated by a wish for power. That applies to a great extent to all parties and it's the nature of our political system - it favours the power-hungry, the cynical, the narcissistic. This is in contrast to certain indigenous people who choose the wisest person, who usually does not WANT to lead, as leader.
Having said of all this, Johnson took lack of principle, lying and self-centredness to a new level. Going forwards this has had some bad effects that extend far beyond the man himself. It has somehow made blatant lying acceptable - something we just have a little laugh about and say 'Oh! - it's just Boris!' Other politicians now seem to be following suit. Liz Truss, for instance, came out with some far-fetched claims that, unfortunately for her, she did not have the chutzpah - or other qualities - to make convincing.
The other Johnson effect has been the cynical, self-serving way he got rid of more experienced people who could have been a moderating influence, thus leaving the party impoverished. Like Trump (not as bad, but...) he has had a horrible effect on general expectation of truth, coming from the mouths of those in public office. Anything goes, if you can get away with it, and ho! ho! we're all rich boys together and who cares about the plebs. Many people love his naughty boy style and they don't look far enough beyond it - and that makes him dangerous.
Despite all of this, I do have hopes for Sunak - fingers crossed I'm not wrong.
As for MPs holidays, if their partners and families want holidays while the House is in session, they should go alone! MPs have enough time off. When Parliament is in session they should d* well do their job!