They do not want to get sued, dragged through the mud and have their careers ruined by libel suits and armies of lawyers hired by the richer-than-they powerful abusers in their industry. That is the entire point.
It is only because some have now come forward that hundreds of others can dare to say what happened to them. They have been silenced. They did not or cannot produce prosecutable evidence because not only are these encounters "he said, she said", but because abusers become very strategic about how to do it without gettting caught.
Maybe you are right, maybe I am wrong. But it really feels sleazy the way it is being done.
And if there was ever a time to name names, that time is now, while there is blood in the water.