Wow.
This one just stopped me in my tracks.
Since most people don't start family research until they are after 20 years old, wouldn't that mean then that nearly everyone under the age of 80 would have to be considered a novice? 
Or is that the point you are making - that everyone must consider themselves to be a novice? And by doing so, you are less likely to make assumptions in your research?
I'm just guessing here. I'm a bit confused and trying to understand your point. Unless you were being tongue in cheek and it got lost in translation?
Hi, msr, you were just replying as I was typing my response!
Yes of course it was tongue in cheek, I had put a smiley after the first time period mentioned to show that it was in jest, but it seems many missed it.
“To me anyone who has not been researching family history for at least 40 years is a newbie. “
I'm trying to do the math here.
One is born; grows to the point where an interest in family history takes hold; spends 60 years learning how to do it properly; then what? Passes over and meets the ancestors?
Sounds like a perfect scenario to me then ones ancestors can spend eternity poke fun and pointing out the false assumptions made.
That would seem to indicate that all the 'professional' genealogists are pulling a fast one, and certainly belittles all who are researching their own families.
I have over the years pointed out many myths “professional genealogists” propagate such as the lectures that claim Birth, Marriage and Burial certificates were only obtainable from 1837 ; myth.
Or the “fact” that Stillbirths were not registered until 1927 ; myth.
Or that Births and Deaths were not recorded until 1837 ; myth.
In a number of instances “professional genealogists” are the blind leading the blind.
I could go on but you get my point, many “professional genealogists” simply regurgitate what they have been taught rather than research the facts for themselves.
I fail to see why any suggestion that a person never masters genealogical research “belittles all who are researching their own families.”.
I have researched practically all my life and as every year passes I realise there is more I have to learn about the subject than I have learnt over the past 60+ years I have been doing it.
That is despite doing a number of courses on the subject and associated subjects., but then possibly that is due to the fact that I was educated in a way that told me one learns more about a subject the longer one is interested in the subject.
Cheers
Guy