There was no such thing as Corbynism or Corbynites for the vast majority of her parliamentary career, the term itself is interchangeable as a term of support or derision depending on your point of view - it isn’t really a thing. The left of the Labour Party have had many high profile figures before Corbyn all of whom have had and expressed differences with the Labour Party, often with justification.
I guess if you want Labour MPs only to hold the party line without ever dissenting then you purge the party of MPs and candidates who disagree with you. This is a tactic that Johnson used in 2019, it didn’t work for long. I don’t believe our politics will ever be served well by homogenous politicians who do not criticise, oppose or seek change…even within their own party.
I get that you don’t believe that socialism is a legitimate ideology that has a place in the modern Labour Party. Congratulations, that is what you have achieved.
Abbot has been an exceptional constituency MP over many years. That, and causes she believes in, have been the main focus of her career. Her shadow cabinet roles have only been a recent addition.
Her gaffes and transgressions are magnified because of her profile. It has shaped perception of her unfairly, her gaffes and transgressions are likely no more or less than anyone else who has been in Parliament as long as she has.
And it’s ok for you to not “stand her personally”, it’s not like you are alone holding that opinion. There are many people who hold that opinion, go stand with them…some of those people are truly appalling and it might give you some perspective about the good that Abbot has done.