Because relationships between investors and their financial advisors are regulated, and you don't want to create even the appearance of such a relationship when

Because relationships between investors and their financial advisors are regulated, and you don't want to create even the appearance of such a relationship when you write a column for mass consumption. It's the same CYA reason that people will respond to a question about law with "Here's what the law says, but I am not your lawyer and this is not legal advice".