The LDS Church has also lost its ability to convince those in society around them of their "official" version of history. Unfortunately for the LDS Church its ability to hide the truth from society is lost. The numbers the organization loses will only increase as the truth enters into public consciousness. The LDS Church has enough money and property to survive in the long-term however the Church will struggle to maintain the hold on its membership and the rate of growth will be diminished regardless of fictional membership numbers. As the truth about the LDS Church spreads they will feel the loss of tithing money, the loss of a committed membership willing to volunteer hours of free work in callings, cleaning church buildings and going on missions, the loss of people joining the LDS Church and the loss of respect and recognition by those in society. Changes to the tax status of organizations claiming to be religions but acting as corporations with commercial interests, in the future, appear to be inevitable. It is not feasible that LDS Church as it exists today will survive. Those spreading the truth about the LDS Church's claims are the cause of all this, the LDS Church and the Mormon apologists are simply an effect.
I was in a priesthood meeting two years ago. It was announced that the growth rate of the Church was declining in North America, so they were all over us to accelerate our member missionary efforts.
So, the Church was still growing, but that growth was trailing off. Personally, I hope we start shrinking for a while so the leaders above us can effect some sweeping changes that get rid of values that were popular in the 50's which still permeate our culture -- and also figure out how to make Church service/experiences less boring and tedious.
Whether it will come to what the quote above predicts, is an open question, but I do see that vision above as a real eventuality if we don't start changing the members' experience in the Church. Change comes VERY slowly in the Church, and there is nothing like a crisis to effect change.
Regarding the government cracking down on charitable organizations....I'm not sure if the Church is vulnerable in that respect. They keep the business interests separate from the Church interests, and are very rigid about keeping everything above board (based on the audits I've seen). I do think they have huge cash reserves -- that's why they won't open the books. Perhaps the government might start taxing money that comes in above a certain threshold. If that money is not speant on humanitarian causes, then it gets taxed.
I would actually welcome something like this as I find the Ward programs (the adult ones) are grossly underfunded. It's a strange dichotomy -- the Wards are the lifeblood of the financial health of the Church, yet so little of the funds go back to the Wards to improve their programs. The financial statements are public record in Canada, and the average Ward saw 5-12% of its gross donations come back to the Ward itself. That is pretty meagre in my view.