You don't have to agree, you're free to your own view of course. As I said though, I think most people will agree with me that certain movies are classics which simply don't work when messed with, which most people will agree Ghostbusters as being one of them. And changing the main cast to a totally different gender, race, or (input whatever change you want here) is just not something that does the original move any justice.
Mark my words, I will all but guarantee you that this movie flops majorly when it comes out.
They want to make a movie about a team of women fighting ghosts then more power to them, just don't call it Ghostbusters or base it on the original movies. Or better yet Hollywood.....come up with some new ideas for once and stop fucking up beloved classic movies.