It obviously IS a problem or the arrow/triangle indicator wouldn’t have been added.
The wife’s Prius has it and even though we’ve had that car for almost 10 years, I still give it a quick glance as I had into a gas station. Neither of my BMWs has it (I bet the Germans would prefer ALL cars have their fuel filler spouts on the rear, passenger quarter panel).
The SMART solution here would be for our soon-to-be connected cars to understand from their location-based GPS mapping that we are pulling into a gas station and to blink the little triangle until the ignition is turned off (or better yet, blink the triangle and blink the entire fuel level indicator alternately). The ‘pro’ is obvious, the only ‘con’ would be mis-indication to the user (if he/she was pulling in just to get a snack or if the gas station had converted to a dry cleaners since the last Google Earth mapping updates, etc) but any mis-indication would be minimal in the scheme of things.