O. K. . .
Rosie mentioned a 16th century Act.
so trisher responds (rather than answering Rosie's point) with an historic example of transpeople being one of the numerous groups to be persecuted by the Nazis in the 1930s/40s.
Where is the logic there?
trisher brings in condoms as a comparison to binders.
People are confused (understandably, IMO)
so trisher points out that condoms have a 15% failure rate, which can result in pregnancy (although not at the rate of 15% of girls getting pregnant, which demonstrates another failure to understand statistics, more of which later).
This is then compared to the side effects of binders, which are reversible if they are applied correctly, but not unless. So now we are comparing failed condoms to 'successful' binding. 
We then leap to the idea that the use of condoms will lead to abortion at a young age (when by trisher's dubious statistical analysis they will prevent 85% of pregnancies). Obviously, this ignores the fact that not all condom failures will lead to pregnancy, and of those that do, not all of the pregancies will happen to young girls, but let's ignore that for now.
The next leap of logic is to the idea that 'perhaps' we think that abortion at a young age is ok, that it wouldn't be traumatic for the girls involved, and that we think that binding would be worse. Nobody said any of those things, but hey, don't let any of the above nonsense get in the way of a chance to (try to) score a point and divert the conversation down an entirely spurious alley.