Transition, 'inclusion' etc all have political ramifications. Instead of buying into the remarkably masculinist assumptions of queer theory that the dissolution of boundaries is always good, we should be examining them from the point of group power relations.
Transactivists try to conflate identifying as trans with gay marriage, in attempts to demonstrate the progressiveness of their cause, but the comparators are actually transracialism, trans-abledness, identifying as w/c etc.
The diagram shows the asymmetrical nature of such identifications. Identifying down is colonisation. Identifying up is impossible. The most you can do is improve your individual status relative to your class of origin, which leaves everyone else behind.
It also shows that the classes are occupied. If you identify as disabled, or as a woman, or as black, you are demanding access to spaces and facilities which were set aside for people based on a characteristic which you don't share.
How well tolerated this is gives us a clear insight into which oppressions are tolerated. We're rightly paying a lot more attention to racism, so Rachel Dolezal was fired by the NAACP. Other white women in the US who've tried this have been heavily criticised.