No, it's not well said.

Physics works even if you refuse to believe it. The basic physical mechanisms are well understood. By releasing CO2 we are adjusting the radiation budget, and by the laws of thermodynamic this must be compensated for. We also have a pretty good idea of what a 2 degree warmer world will look like. And a 4.5 degree degree, and a 8 degree.

So yes, this should be something that worries you.