No, that sort of thing is terribly self defeating. You end up acting like a**holes to a bunch of people who've likely never done you any harm, which just makes things worse. If you're going to do something to make a point you have to do it to the actual people that are affecting you, not some random set of people that happen to share a characteristic (e.g. ICE owners).
Ideally you find a way to park blocking the ICEing vehicle in and use some form of an extension cord to charge past them. ...
These are two very different ideas. I agree the gas station sit-in (park-in?) would be counterproductive, but I think using the non-dedicated supercharging spaces first is appropriate and should be encouraged. It maximizes the availability of superchargers. ICE drivers can always park somewhere else, even if they have to walk a bit further, but we can't charge elsewhere when ICE cars are parked at a supercharger.
