So, by deflating the tires, these people are (a) causing the owners to make unnecessary trips to the station to get the tire re-inflated and, in some cases, causing them to call for a tow, or other assistance, thereby ramping up the emissions from all vehicles involved above and beyond those that would otherwise have occurred if they had left the SUVs alone, and (b) not endearing either themselves or their cause to either the SUV owners or to anyone who depends on those owners.
And this is all eco-friendly. Got it!