He hasn't said they shouldn't be investigated. He is simply decrying the apparent need to shout their names when they are arrested but to go all silent when they are not prosecuted, whether because they are released without charge or found not guilty.
I suppose I need to add that that is the second part of his rant. That and we need to do something more to prevent/ punish the bandwagonners.
As for numbers, we won't know until Yew Tree is over. Maybe he has more info because he is closer to some of the people involved, being a celebrity.
Either way, the fact that it is celebs being treated this way should, if there is any justice at all have 2 main consequences:
- Famous people will no longer be able to stand on their fame/fortune and get away with any crime
- Anyone will be able to report sexual assaults and be believed a) because Yew Tree will show them that even famous people can't hide and b) fewer people will make false allegations, thus muddying already murky waters.