This isn't even that. If I'm a person others may take as a reference and I hold Bitcoin, it is in my interest to publicly state that Bitcoin is going to increase in value, because that in itself makes it increase in value and it's good for me.
Actions don't necessarily dictate intelligence. The goal of life has to be defined to make such arguments. For example, using a maze as an analog you could argue the more intelligent person can arrive to the end faster and more elegantly but with life, it has no such defined and agreed on ends. If we're arguing that selfishness is a sign of intelligence then that view is quite myopic.