Let’s stay real here.
a) Trans people exist and they always existed.
Quote from the Bible, which is the oldest book I could find. "A woman must not wear men’s clothing, nor a man wear women’s clothing, for the Lord your God detests anyone who does this.". This was “problematic” enough 5000 years ago to make it into the Bible. So…
b) Yes, it has become trendy recently, so I assume that some Gays are moving into that territory simply because it’s “trendy” right now.
We can pretend that it does not exist and ignore it.
However, some people have problems with Trans girls competing against girls. Trans girls who fully transition obviously can’t compete in the boy category anymore. Look at June Eastwood for example. She went from a 3:50 (1500m) as a man to a 4:45 mile as a woman. Not all trans go through full transition in HS (which is probably a good thing), so you have a hodge-podge. Nothing wrong in simply creating a new category. I don’t believe that people will transition BECAUSE of that.
1.5% of HS people may be a big enough group to warrant a special category. Maybe events could be limited to the 200m, 800m and 3200m