Are you saying that it's possible that these women all shared the same hate for Cosby, and as a result they decided to make the accusations?
Anything is a possibility, so yes. It's just an
example anyways, there are tons of other possibilities (Maybe each one individually hates him, maybe some did it for settlement money, etc etc etc) and unless you have evidence there's no way to know what has actually happened. If for example I wanted to say, "Yes, they definitely did all falsely accuse them" then I would have to provide evidence in the same way that, again, if they want cosby to be charged with rape they need to come forward with some form of evidence.