Is it now antisemitic to accuse Jonathan Freedland of "disgusting subliminal nastiness"?

I ask because I just saw an Twitter exchange between Linda Grant and the Community Security Trust's Dave Rich.  See here:

Jeremy Corbyn: The Outsider | VICE News - watching this I now know Labour's antisemitism problem comes from the top https://t.co/phhqs6V6v7

— Linda Grant (@lindasgrant) June 1, 2016

I just watched maybe half of the excruciating thing and all I could see that touched on anything to do with the antisemitism malarkey was Corbyn talking to Seumas Milne about Freedland.  I thought accusing someone as nasty and lacking in integrity as Freedland was pretty fair comment. But here's Dave Rich of the CST:

@lindasgrant if Milne was a mensch he would have replied "no, I've known him for years he's a decent guy we just disagree." But he didn't.

— Dave Rich (@daverich1) June 1, 2016

So I'm not sure if Linda Grant is accusing Corbyn or Milne or both of antisemitism but in the little that I watched I couldn't see anything else they could have been referring to.

If I'm right, Linda Grant is saying that to dislike Freedland, who many of us believe is a thoroughly dishonest nasty piece of work, is antisemitic and that Dave Rich thought that Milne would be a better man if he simply passed off smearing Israel's critics and supporting racist war criminals as just little quirky blind spots of an otherwise decent chap, Jonathan Freedland.

I think Linda Grant and Dave Rich make a large part of their living yabbering on about Israel and antisemitism.   I don't know much else about them. Maybe there isn't anything else to know.