I've never seen an actual definition of an RC "Expert" so you can be one just by saying you are.

One of our club members won the AMA Nationals in F3A Pattern competition several years ago and I consider him to be an expert pilot. He would disagree and say that he is "pretty good" but nowhere near as good as he could be.

We have several excellent pilots inour club. Some compete (or have competed) and others just fly for fun. Absolutely none of them would say they are experts even though many of us watchiing them would say they are.

It's probably wise to be wary of self proclaimed experts, especially when only seeing an online persona. We can all be experts from behind the keyboard if we want.

I have learned a lot about RC in the several years that I have been involved. I do not consider myself an expert in any area. I know more than some and less than others. Most of my flying ability is beginner level. My kit building skills might possibly be intermediate on a great day but I really consider myself a beginner at building.