No, they won't. They are going to defend Smollett by saying that America is really effed up with racism and homophobia if someone felt that they needed to do something like this to make their point.
They will say just the fact that someone would make up this story is an indictment upon the racism and homophobic aspects of America and that should shock everyone.
They will find a way to excuse and justify the perpetration of this hoax. They've done that with all the other hoaxes created over the last couple of years.