All right, what percentage of the population do you say actual sufferers make up? (Or whatever way you'd like to express the proportion other than percentage.)
Unfortunately, finding accurate statistics is impossible these days because pretty much all organizations and government agencies include transtrenderism as part of their numbers: I could come out and say I'm "gender dysphoric" tomorrow to my GP, and I guarantee you my declaration would be entered as part of the official numbers of "gender dysphoria sufferers in the UK."
Anyway, by estimate? Not even a single percent world-wide. At a stretch, I'd say half a percent. But let's be generous and say a whole percent.
Now, the global population is projected to be 8,019,876,189 since Jan this year, so 1% of that is 80198762 (just over 8 million) people, rounded up, globally. That sounds a lot, right? To use Shibuya Crossing as the example again, it has 2.4 million people cross it every day
in total, so walking down it would mean you'd encounter roughly 2,500 people in one instance (this data was recorded from an actual Japanese government survey, IIRC).
In that one instance,
statistically there'd be 25 people who would be sufferers of Gender Dysphoria in those 2,500 people you'd walk by. But let's be real -- the
chances of there actually being 25 sufferers in that 2,500 crowd is so remote that you're more likely to be killed by a stray firework out of the blue. Would it eventually happen if you walked down that crossing
every day for a year? Yes, since that's probability coming into play. But an
occasional jaunt? Nope.
Watch out for stray fireworks instead, in the middle of the day, out in the open... yeah.
And, remember, this is being generous by using a single percent. The real number is probably less than a half.