He stopped being clever.
He stopped being funny.
But that's not the reason he gives for his own 'resiling' from Judaism.
In 2006, as the Israel Defence Forces (IDF) were undertaking their second major incursion into Lebanon, I resigned as a Jew. I did it publicly in an article for the London Evening Standard. My resignation wasn’t a protest against Israeli aggression – why would they care about such a gesture? – but aimed, I believed, against prominent leftwing English Jews, who, despite the complete contradiction between their espoused values and the undemocratic, apartheid and territorially expansionist policies of the so-called Jewish homeland, continued vociferously to support Israel. A couple of years earlier, on Question Time, I had also challengedMelanie Phillips over her campaign to force British Muslims to take a loyalty oath, saying: if British Muslims, why not British Jews? But on that occasion, when she had accused me of being an antisemite, I was still able to play my trump card: I’m Jewish.
So, Will Self wants to get labelled an anti-semite without having the 'self hating' thing thrown into the mix.
That's really going to happen.