I would also find it highly unlikely but there is no other way to know than for them to be 100% transparent about it. They don't have to be though and I doubt they will disclose such information. It creates uncertainty among investors though if we don't know how much is left. And uncertainty can result in downward pressure on the price.
I would definitely like an update on how much funding is left, hopefully in time they will release some information on this.
Hell even a little information that they have funding for at least a couple years would silence this discussion entirely.