The fact that the arrest was made in connection with Operation Yewtree very strongly suggests that the alleged crime is child sex abuse.
Perhaps you genuinely do think that making a sick joke is worse than raping a child, but if that's the case I suggest you check your own moral compass first.
You do know that Operation Yewtree is NOT
purely about child abuse, don't you?
If the allegations are true, hardly.
Allegations by whom, the Police or a bunch of Twitter users? Check the accuracy of your own moral compass.