Yes, very sensible.
It's very reassuring that we are edging closer and closer to pinning down what these children mean when they say they are trans.
As we know from here, the answer that your gender identity doesn't match the sex you were born, is complete bollocks and falls away under scrutiny.
So You need to find out why the child thinks the're the opposite sex. And as he points out, social contagion is part of it, but what are they actually spreading?
What's the narrative? Explicitly.
You're a girl because...
You're a boy because...
Let's hear it.
And on another note, I notice that the concept of being non-binary seems to have fallen right off the table as a result of this guidance 😁
Perhaps claiming you don't have a sex at all, is a bridge even further than claiming you're the opposite sex.