It's important to recognize that blame/circumstances are not isolated. Some variables may be within one's influence, but not ever fully in control. Seeing that there are concerns is a useful step, but understandably more difficult to take appropriate, if any, action. Asking for help is not a weakness.
Now, if we're talking about society at large, that's their damned fault.
There is zero reason to think 90% of people are going to die as a result of climate change.
The status of climate change claims is essentially:
Average temperature is going up: definitely true
CO2 levels are going up: definitely true
The CO2 increases are the cause of the temperature increase: probably, but conflicts with previous periods in geological history of higher CO2 and lower temps, or vice-versa
This is caused by humans: maybe
This will cause problems for humanity: definitely
This will cause existential threat to humanity: almost definitely not true
This will cause benefits to humanity: definitely true
The notion that climate change is going to kill us all is simply false. It’s not what science indicates.