To clarify for lurkers:
Sperm is developed in the later stages of puberty. If a male is blocked at Tanner stage 2, the earliest stage of puberty no sperm have the chance to develop if that child goes onto cross sex hormones. They are sterile.
If a male is blocked later, when sperm has a chance to develop, they still need to preserve their sperm before progressing onto oestrogen. This is difficult. If sperm preservation is successful, that male would still require artificial fertility services in order to father a child. They are infertile.
Equally, there is published data from the Mayo Clinic, as indicated by TiredEyesSoreHeart that shows testicular sclerosis and loss of sperm-making ability on just puberty blockers alone. This means that even if reversed (which never happens with gender distressed children) it’s likely some males will still have fertility issues as a result of this sclerosis.
Equally, for females, if puberty is blocked at Tanner stage 2, the vulva, vagina, and uterus do not develop properly in order to a) conceive naturally and b) carry a fetus. They would need fertility treatment to even have a chance. Ergo, they are infertile. Girls are not sterilised on account of all females having they eggs from birth. If egg preservation is carried out, this is an invasive procedure and the success rate of a pregnancy from cryo preserved ovarian tissue is incredibly low, and would require intensive fertility services just to stand a chance. Again, they are infertile.
All gender clinics know this, because they have infertility on their consent forms.
As an example, this is the consent form for Johanna Olson Kennedy’s research in LA:
https://drive.google.com/file/d/1Q-zJCivH-QW7hL25idXT_jITfJZUUm1w/view
This research made the New York Times recently when JOK admitted she didn’t want to publish data that showed puberty blockers in a negative light.
You can see on the consent form for the research trial, on page 32 it clearly states:
If your child starts puberty blockers in the earliest stages of puberty, then goes onto gender affirming hormones, they will not develop sperm or eggs. This means they will not be able to have biological children.
This is a gender clinic research study, being run by a gender affirmation champion, Johanna Olson Kennedy, who is telling children they will be sterile and infertile. So you can either believe her, or Tandora.
These are the incontrovertible facts. Anything else is a distraction.