Although having said that, even the eco-modernists seem like they would likely be frustrated by the Tesla statement, given how much it seems to be giving lip-service to their words while slow-walking any promise of implementation (not usually a Tesla hallmark!)

Quite possibly, yes. Though as that last Nordhaus link shows, they also seem preoccupied with identifying their opponents over pursuing their stated goals, sometimes. (That's the text of a conference keynote, mind you.)