I do, however, agree that alcohol impairs your judgment. Especially 3-4 glasses. And I do think it probably did play a small part in the 8 year old being left behind.
And I also agree with those stating that they aren't "normal", and that they need to be even more vigilant due to what could of happened. This is why I am glad I am "normal" and therefore allowed to be human, as it must be bloody exhausting living that sort of life and not being allowed to make human mistakes.
But, you can't judge his parenting based on his political stance. That would be like saying I am a shite, incompetent Mother because I would no doubt run the country into the ground as I would have no idea where to even start. Yes, he is a shite, incompetent PM, but that don't mean he is a shite, incompetent Father.