We know that infinite economic growth simply isn’t compatible with a planet of finite resources, and we also know that the treatment of environmental concerns as “externalities” in pursuit of never-ending GDP increases is incredibly damaging.
We don’t deliberately treat environmental concerns as being something outside our area of concern. Instead, we note that GDP, and other market based measures, don’t capture externalities very well – that’s actually what the word means, that these righteous and just concerns are external to market processes.
We then try to shoehorn them into our decision making process as best we can, there are entire libraries stocked with discussions of this very point. Usually, by adding the price of them to those market processes.