Speaking as a Jew, I don’t read GP as being ‘anti-Jewish hate’ — it seems to be at least vaguely positive in claiming the weekend as a Jewish invention, albeit with very muddled phrasing. (For one thing, Zionism didn’t exist 2000 years ago…)

It's not anti-Jewish hate, it's actually Zionist propaganda (the claim that Zionism is older than Hertzl).

Just anti-jewish, nothing else? Sounds a bit jewish supremacist.