This, I suppose, is implicit in the word "boring". I think the premise is: People could follow boring advice to become successful but they don't, precisely because it's boring.
Regardless the definition of success, we tend to consider it as being in the top <50%. So even if everyone was more succesful (regardless the metric) in today's standard, only the best ones would be said "successful".
Regardless the definition of success, we tend to consider it as being in the top <50%. So even if everyone was more succesful (regardless the metric) in today's standard, only the best ones would be said "successful".