So what is the best way to explain Bitcoin?
Well, I think members within a properly decentralized community could suggest the proper explanations for Bitcoin and things related to it. The best answers could be chosen via right voting, and voters will have to vote based on answers that are simple-to-understand, answers that are true/right, answer that capture the basic Bitcoin principles and don't go against the principles. The elected/selected "professionals" can work with such answers in addition to what they know or understand already about Bitcoin.
I think the answers the professionals provide on the internet can be used to judge their performances by the decentralized community. They can be retained or changed based on the answers, how they perform, manner of approach, grammer too (unfortunately
) etc.