Of course its never ok, 1 person is 1 too many, but the way it has been framed is it is the whole party, which is nonsense and whether you agree or not the MSM did fuel the notion that it was the whole party and it was rife. As I say 1 is 1 too many, but the tarring of every member as antisemitic is just plain wrong and was done for nefarious reasons. Again whether you agree or not it played a part in a much wider systematic attack against the Labour party helped by the enemy within who for Labour MPs feared Socialism more than Johnson. There is also a much wider context to the whole debate as well, that of course is Brexit. Labour had to be discredited as a political movement because it was deemed to be Pro-EU, I am absolutely 100% certain that if Labour had taken the Lexit position then the antisemitism allegations would have been barely mentioned in the MSM, of course that does not excuse the fact that antisemitism existed because it did and there is none and should never be any defence of those who carried out the antisemitic attacks.
The use of the word "cult" is also rife, it makes out that advocating for Socialism is akin to being a member of the Moonies, it is derogatory and atypical of the RW media's Macarthyite Stance against the left. That is another debate though and not to be confused with the issue at hand. The cult issue is I believe one reason why Corbyn did fight back and why he is being encouraged to fight back further and if need be take Starmer to court. He was undermined at every turn by the PLP despite him having the overwhelming backing of the membership. Corbyn though tried to include those who were against him, me personally I would have expelled them for acting against the memberships democratic decision. Whether his decision to do that is right or not it is supported by the left of the Labour party and whether you like Starmer or not his decision to expel Corbyn has split the party in the two, he has pitted what you refer to as the cultists but I would call Socialists against the Social Liberals and although throughout history the two factions have always had an uneasy relationship I really do think that this is the final straw and the party has to split and go its seperate ways because Socialism and Social liberalism are not compatible because as Brexit (yes Brexit again) has shown that the Pro EU Social liberals cannot forsee a future outside the Neo-liberal club and the Socialists see the future as being outside the neo-liberal club.
From a personal point of view I left the Labour party when Starmer got rid of RLB and he brought back the anti welfarist Reeves back into the fold. Labour has gone for me, its sad and it ended badly in a place I abhorred. The party of equality been found to be home to people who pushed discrimination is too much and I am convinced Starmer helped push that agenda so he could have the party for himself and his acolytes. I will not vote for Labour again whilst he remains leader and unless the CPGB stand in my constituency I cant see myself voting at all.