I agree here. People are biased alredy, they don't want to spend coins because of a fear that in the future Bitcoin will be much more valuable.
Bitcoin community is suffering from our own 'Bitcoin Pizza' syndrome.
I don't think this is a problem at all. If people don't spend it, that just makes their dreams of price rises come true - there's less Bitcoin being thrown into exchanges and the price stays propped up.
People hold fiat and don't spend it sometimes as well. Some people hold millions in fiat. It just means that people get better off by holding Bitcoin. Good for them.