Those were wild predictions that ruined it for the accurate ones. The old bad apple in a barrel deal.
People get one bad piece of information and throw out the whole set. Some, I think, were designed to get people motivated for change and were generally unsuccessful. Others were predictions based on incomplete data.
Basic oil depletion was for mid 21st century, I remember, and that is close to true. It will be getting much higher in price well before then. Ehrlich made the mistake(in 1968) of completing the initial hyperbolic curve of a stimulated population (fossil fuels>more food, predators mostly eliminated>lower death rate), instead of referring to actual populations measured in field and lab tests/observations(like I did in 1967). He found out later that the rate of increase slows before crashing, but much of his credibility was ruined.
Now, when we really are at or past tipping points, people are still reluctant to act, and think "everything will be OK".
Your planet, in your mind, is 99.99% destroyed----too bad. 
