In the best possible scenario transitioning is replacing a functional body part with another, not saying we're exactly there yet.
In most cases BIID would just mean removing a functional body part, so it's not surprising that those people would be screwed in the long term. What happens if you replace the body part with an equal or a superior prosthetic?
What happens if you replace the body part with an equal or a superior prosthetic?
That depends on a whole bunch of factors. Maintenance schedule and expense, for example. Availability of spare parts. An interesting question is who has control over firmware. Legal status is another interesting question (for a reference point, in the US you do not own (in the property sense) your own body).
Rationality quotes time!
The usual rules: