Remember this the next time you read a post you disagree with, which happens a lot here.
Just because you do not like the publication does not mean the studies are wrong.
Here's the essence of the dispute. It's far less about embracing or endorsing transgender people than it is about treating them with respect and with not denying them civil rights or actively lobbying to discriminate against them.
Whether they do or do not regret their decision has nothing to do with any of the above points.
And, again, getting worked up over a P.A. announcement is so fucking church lady of you it's laughable.