Galaxy I too am a paying member of the Labour Party. I’m sorry you see this issue as a line for you, and I sincerely hope you’ll find it in your heart (and head) to vote for Labour in the GE.
The Conservative Party has dominated British politics throughout the 20th & 21st Centuries. Arguably, political naivety by Labour has contributed to this. We’re not used to, and feel uncomfortable, seeing our politicians playing the political game. If KS is going to lead the party to secure victory he has to play this game. Or, we take the moral high ground of ‘we’re better than that’ and sit on the opposition benches for the foreseeable future. Politics can be a nasty business.