I see 2 subtexts to Khan's statement..

1.. He's a muslim being very cautiously diplomatic in needing to appease and not alienate various factions of supporters and potential enemies..

1.5.. He is a successful politician after all... 😜


2.. He's politically ambitious and basking in new found power and glory,
and making clear his position on Corbyn, whatever may happen regarding Labour Leadership rancour in the coming months..

I don't see obvious proof that he believes Labour is stuffed full of 'jew haters'..
though, as a muslim he's bound to be over sensitive to insinuations and accusations, and inference of 'guilt by association'
that will no doubt continuously be pointing his way.. ???