Chicago Hebrew said words to that effect ages ago (when I was posting earlier ravings ... er, I mean sermons) of the esteemed Rabbi Yosef. He said that Rabbi Yosef was too old, and not mentally fit. However, he does have great influence and a high position.
That’s basically right. In his old age, you have to distinguish between his rulings and his rants. His rulings are enlightened, moderate, and brilliant. He’s probably the greatest rabbi of the past 300 years. His rants I think are largely a product of his old age. But they really don’t affect his rulings or his policy preferences. He might, for instance, say bad things about gentiles. But he would strenuously rule that Jews should treat gentiles with the same respect, honesty, and charity they would treat Jews.