The funny thing is, I spoke with the head manager about it. She goes "oh well, you know, we have no authority as to what goes on in the parking lot. If people want to park there, it's not a crime. We don't have the authority to tell people what to do when it's outside the building."
So next time I double park in front of them, and the shift manager threatens me, I'll just say "Hey, your boss tells me you have no authority as to what goes on in the parking lot. You'll have to take it up with the PD."
IMO in a normal world, the management would be sticking up for me, not defending people parking against the rules and threatening me (the legitimate customer!) instead.
EV drivers are a community at the moment. If other drivers are made aware that not only are those spaces usually taken, but that the management of the business in front of them will also give you grief for wanting to use them for their intended purpose, they won't see a dime.