If they changed this in the way you describe, I wouldn’t even personally consider it retcon.

To me, “retconning” is changing some point which is kinda substantiative so that it disagrees with what was presented before. “This thing we said happened? Well it didn’t.”

If, as you suggest, they kept the idea of making the Mojave hospitable and pleasant but changed this so it’s more respectful of the existing ecosystem, then to me that’s not a retcon, it’s more like updating the existing concept to be better in line with the ideals of a contemporary audience. A refresh, if you will.

So I’d be totally fine with that :)