Aren't thing a little , rather a lot deeper than that.
Starmer , even if one agrees with his political stances - may well not have a spine. What starmer has is the roboskeleton of the labour establishment with even many outliers on side.
Media historiographers and puff pieces by the score, BBC backing, radio personality backing, international power centre backing, international executive organisational backing, a higher number of individuals with system power in the nin Westminster world that have affinity with the project project to name just a few nodes.
The above nodes deployed officially or unnoficially to the starmer project plus said backing operationalizing for him (and cynically hamstringing team Corbyn) and promoting the status quo ... I would suggest IS starmers spine and it's absence ( and unsubstitutability team Corbyn assetry - in power terms) in terms of supporting team Corbyn represents Corbyn s lack of spine.