I think it’s mostly internalized transphobia, coupled with good old-fashioned fear of the unknown. I don’t know about you, but I tend to create new excuses to avoid change after the old ones fall away. No amount of objective evidence will ever really be enough. It sucks.
My chart method was a simple Low/Medium/High ranking for each day (along with the very rare None), converted to 1/2/3 and summed across months. In retrospect, I wish I’d at least done some better weighting of the values, because High days were waaaay worse than Low ones.
Love your new pic, btw.