I don't think people believe that they are mutually exclusive, but rather that even though we finally got #1, we won't see #2. Given that #1 involves fixing the problem caused by the source of #2, we're just going to see the same thing happen again.
It's one thing that I was never fond of with Bernie's speeches... he had a habit of talking about fixing the here and now, but I rarely heard anything about the underlying issues that were the cause of the surface-level issues. (That sort of thing isn't really limited to him, but he's who I recalled first.)