I only find spam replies today in most SEO discussions. If you want to discuss SEO, go to forums that do nothing but.

As to the danger the REAL danger is that SEO rules change as Google changes. And Google does not publish the rules so any "expert" is guessing.

-> My view is to not work SEO but the company site and products. If you are relying on SEO for your sales you are at the mercy of Google.