I don't see what the fuss is about. Why shouldn't Facebook try to provide the best user experience possible? We live in an increasingly connected world, so this

I don't see what the fuss is about. Why shouldn't Facebook try to provide the best user experience possible? We live in an increasingly connected world, so this tight integration between different products is absolutely critical to a positive user experience. Would people complain if any other company added Facebook login to their product? No!