There is certainly a risk it taking current trends and extrapolating them. So your caution is wise.

1) failing to That would ignore the things humans would do to mitigate those perceived risks. In the case of the ozone, regulations phased out the use of refrigerants that believed to be a contributor.

2) and It would ignore the uncertainty with the trend changing with no reaction from humans due to our lack of understanding of the trend.

And I definitely don’t think it’s an end of the world scenario.

For what dread prediction has ever come true, maybe too early to say for certain but I would say the national debt may be one such prediction.