Their campaign was contradictory in that regard. On the kickstarter page you can still read the following:
"We have investors that have agreed to contribute the balance we need to complete this game as long as we can validate that there is a demand for a high end PC space game. By meeting or surpassing our target on Kickstarter you tell the world that you want a PC based Space Sim and allow us to make this game."
https://www.kickstarter.com/projects/cig/star-citizen
So the idea was: collect a decent amount of money through crowdfunding --> investors will hand out additional funds.
Who these investors are or were, and how much funding they provided or would have provided was never made transparent. Anyway, this shows that the very original concept was not based on pure crowdfunding, and there has always been the possibility that funds from other sources form the basis for the project.
Edit:
btw.: I don't like when people make up arguments without referring to sources. Fans or critics alike generate random and baseless narratives by doing this, and everything becomes a mess in the end.