Yes the Bitcoin community, more so than most others because it's built on a deflationary model which heavily favors early adopters. One of the major reasons it's failed on its goals to be a currency is that the deflationary model encourages passive speculation holding it rather than using it, but that only works as long as new money is being pumped into the system. Even cursorily following the topic will show many examples of advocates making unrealistic promises which make little sense from the perspective of building a healthy community but are entirely understandable when you realize that they are hoping to see a personal windfall from everyone they convince to use it.