I think the deserters did so because they thought a Labour Party with Jeremy at the helm would be unelectable. They hope to unseat Jeremy very quickly and have a bash at defeating the unpopular Cameron.
Watch this space!

This points to the fact that these people, male and female care more about their own careers than seeing socialist policies being seriously discussed and advanced.

I have said right from the start that the important thing was to see Jeremy elected with a reasonable mandate from the Party members, if the deserters don't like the democratic will of the membership they should leave and join the Tories.