"Until now the party has shown good unity under Starmer. "
The deputy leader of the Labour Party (Long's flatmate) is one of those opposing her sacking - the Labour Party is divided at the top

"Rebecca Long-Bailey, in full knowledge of the devastation the ‘Labour antisemitism’"
Are you suggestion that the Labour Party has a problem with antisemitism, if not, are the accusations not worth opposing because "the Tories might use them"
Where does that leave nationalisation, or equality of opportunity, or homes for all, or a right to health for all..... and all the other policies the Tories are likely to use ?
Maybe we abandon those and just accept policies the Tories won't use ?
The first of those points is the most immediate but all the rest logically follow
Jim