No, no ... Although I sometimes get a bit revved-up on a particular issue, I'm not a e-warmonger.
True, to say in the absolute that a properly-maintained modern engine "does not pollute" was, uh, a fantasy.
But to say, absolutely, that a properly-maintained engine in a modern vehicle is "environmentally harmless" is not an overstatement.
Even when it was 12-years old, CO and HC tailpipe readings from my gone-but-not-forgotten Merkur XR4Ti were so miniscule, the effluent outflows from any given elementary school would have created a greater EPA-compliance problem for the local water-treatment plant than 200 cars like mine.
The original point being that, modern vehicles being as self-monitoring as they are, by and large, to keep our vehicles from becoming environmentally unfriendly and subject to the political schemes of the corporate corn-belt "farmers", mile-by-mile, all a critical-mass of owners has to do stay current on maintenence basics ...
And, maybe, organize our own PAC.