Okay, let's address this unfortunately high number of suicidal ideation in trans folks.
Suicidal ideation, in research, is a more critical construct for its predictive power for suicidal attempts.
It is also unfortunately the case that research on suicide risk among trans folks is meager as one brief literature review article comments:
Source:
Suicide Risk Among Transgender People: A Prevalent Problem in Critical Need of Empirical and Theoretical Research
However, there is still research. One research study shows an interesting finding:
Source:
Predictors of Suicidal Ideation in a Statewide Sample of Transgender Individuals
The same study proposes this explanation:
Also, to credit
@GripMaxxing, the study DOES affirm there are higher SI in FtM individuals than MtF:
The statistics is in the paper, by the way. The statistics is presented in a table so I didn't bother copying it here since it would take too much space.
I would get into the discussion and the theoretical perspectives that the literature review article provided but I feel this is getting too lengthy and I am afraid I am putting too much effort for someone that, at least in my opinion, does not show much enthusiasm in actually engaging with this. So instead, I will dump this part because it addresses something you said earlier:
But the brief literature review article says:
This is in the "Correlates of suicide ideation".
Now, "potentially" does some lifting there, I admit, but you can now see why people not being "themselves" is not enough. It's not JUST the confirmation, but also the discrimination and violence they experience as a result of transitioning. The statement above shows that
"gender identity acceptance and disclosure" is a potentially protective factor against suicidal ideation, and THAT makes sense.
Edit: forget to add a little tidbit addressing another point you made