And I don't care for the term "transition", either.
I will explain.
X-TO-Y and TRANSition imply movement, motion, change of status from equivalente terms.
It could be personal, anedoctical experience, but I don't feel my gender has been changed. I growth into myself, into what I've ALWAYS been. I didn't come from a masculine state to "translate" to a feminine one. I've always been a woman, that got erroneously assigned make at birth. So I rarely talk about my "transition" and usually use the term GENDER AFFIRMATION.
I affirmed my gender and my nature, that haven't really changed.
In the same way I rarely define myself MtF. first of all Male and Female are biological terms and I'm not really equipped to fully define them (and I honestly don't know how much I really can change some characters intrinsic to my body). Second or feels a bit... Binary, and while I AM a binary woman, it doesn't sit well with me, philosophycally and politically.
I much prefer to call myself AMAB: it's an objective truth that I've got assigned male at birth. After that all bets are off.
So I don't call myself an MtF transitioner, but an AMAB person that is AFFIRMING her gender and nature.
What do you think? Does my feelings resonate? Or do you prefer and find value in XtY and transitioning terminology?