I think it would cause the public to second guess WotC. I mean, if a the company has to use Kickstarter to fund 5E, then wouldn't people actually worry about the state of WotC and actually back off - given that the perception is they need money? After all, if D & D hasn't any money, it's doomed to fail. Thus, the whole shying away from the Kickstarter.
Not to mention, if D & D needs a Kickstarter, can you imagine what flame wars and fuel that will add to the edition wars? If there's no money, then obviously edition (whatever) bankrupted WotC - which just "proves" the "other" side's point...
Looking at that, I think it could be something that could cause publicity to backfire, which would cause further hurdles for the acceptance of 5E.
Then again, I could very well be in the weeds.