I'm going to start by saying I'm not a lawyer.
It does seem to me, though, that the law has become archaic through lack of use and application. I think the bawdy house laws in the last two years have only been used once or twice.
I would ask this question, and probably throw it back to you: What other remedies exist in the law?
When we look at other areas that I'm involved in, such as criminalization, we really see the broad overuse of the law. I personally think that we need to ensure that the laws we use are only those that can be put into effect in situations with true cause—consent is not given, harm occurs, there is non-consensual activity, and so on. I really don't see much use for the law as it relates to sex work anymore, but I do see a place for other laws, including possibly aggravated sexual assault for areas of non-consent.
I'm not sure if I've answered your question, but I think that there are other laws on the books that can be used and that this archaic law needs to be made to go away.