No, I don’t really know what “SEO expert” means or why the SEO industry is obsessed with them.
There’s so many disciplines which encompass SEO it’s literally impossible to be the most knowledgable in each and every one of them.
I like to think I can hold a good conversation across most areas of SEO, based on my experience of actually doing SEO – the part that’s often overlooked by some 
In most cases as an SEO Consultant I know when I can help you and I’m not afraid to say when I can’t.
Or when I would need to do some testing and research…