Just go enjoy the movie if you are anxious to see it, wait till DVD if you aren't that anxious, and otherwise don't sweat it.
Streisand made her money for her performance in the film - you dropping $5.50 for a matinee, or $3 to rent the DVD, won't make a big difference
Most of the most obnoxios celebs are ones that I don't support at the box office, anyway. I enjoy Larry David's HBO series and won't watch it any less because he is a nauseating democrat and his trophy wife hosted the 'hate bush' dinner a while back (I suppose she has the need to feel significant). That's just one example.
I can't think of any celeb or music star who alienated me enough to not patronize their product, but that says more about my taste (they were not folks I supported anyway), than it says about my commitment to avoiding their work.
Just enjoy the movie.
Larry David is another great example. I loved his show until his ultra leftist politics kept finding their way into the plot lines.
Now, I'm done with him.