Do you not know what 'certainty' means ?
Do you know the difference between risk and certainty ?
If I bring my umbrella does that mean it 100% will rain ?
I know for instance, that they hired this man not because of a "risk" but because of reality. Warm air causes ice to melt, which causes water levels to rise, which flows into coastal communities. You don't need a PHD. in environmental science to understand those basics.