The Israeli sect that put this statement out are so extremely orthodox that they certainly do not speak for most Jews.
While gay sex is forbidden in the Bible, transing a child would never be acceptable to practicing Jews. Transing a child causes appalling harm to them, and sterilises them, both of which are categorically forbidden.
The orthodox view on homosexuality is essentially that you can be it but you cannot act upon it. (I'm not defending this, just stating it.)
And before anyone thinks that this attitude is Israeli, as opposed to Ultra-Orthodox Jewish, please note the success of Tel-Aviv Pride. Some 250,000 people participate, in a country the size of Wales.