We can't see if they do or do not have a placard hanging from the mirror. In theory they may need some extra door space to get out so taking the second spot would almost make sense, but that's what those dead zones between handicap spaces are for.
Want to make an actual hassle for pricks like that? Go to your local car parts store, buy yourself a tire valve removal tool and leave it in your glove box for this occasion. It's a simple thing to use, take off the valve cap on a tire, insert the tool into the valve, unscrew, and bam all the air rushes out. Best part? The only way to fix it is to have that tool. you can't put air up the tire without that valve.
Slashing a tire is a property damage misdemeanor. Owning a tire valve tool, removing their valve cores and placing them on their hood is a criminal mischief fine tops and a great laugh.
I knew a guy who kept a pocket full of small gravel. He would take off valve caps, put a piece of gravel in the cap and then replace it. The perfect size to let out all of your air.
Whenever I drive my parents F250 (long bed mega cab) I always park at the back of parking lots. I know I park like an asshole, but at least it's out of the way.