I find it strange that you do not understand it. Of course most humans looking at the title will know exactly what the asterisks stand for....I said clearly that the 'main' use is to not trip filtering programs, so that someone looking for love songs will not be blocked IF that thread is currently visible.
It will also be a slight relief to those who 'tend' to be offended by list of 'naughty words, but if that was all **s did, I would not bother.