[flagrant_taco]

If civilization collapsed, it seems reasonable that anyone predicting it wasn't wouldn't be remembered. Anyone left standing after a collapse would have bigger things to worry about, and the medium in which predictions where published could very likely be lost in the collapse.

If someone were of the honest opinion that broad scale collapse was imminent I can only expect they would also not expect fame afterwards. Anyone sharing this opinion disingenuous is more likely to be sharing it for gain before the collapse that may never come, via book sales or speaking engagements for example.