I don't know about that, but what I find a bit "trashy" in this practice, is that (and it's only my opinion) I think they are trying to secure a maximum of money in advance on a game for which they are unsure of the result, finance-wise. This way it might help cover some loss, in the case of a poor result. But I am just an average player, and I don't know how it works, all I can tell you is that I never ever bought a collector edition of a game, even if it was something I really, really waited for. Waste of money to me. I want the game, don't care about the goodies.
But indeed, for a fan funded game, I find it a bit confusing to sell a collector edition for the same price as an AAA game would propose for same said collector edition.
Anyway, I will not complain because I have the chance of now having residence in a country where even an AAA game costs 2 or 3x less than in the rest of Europe and probably the USA.