My thinking is that only Teslas should use the Tesla network. Or you risk them rising up collectively against you...
There has been a lot of discussion and argument over this point. But Tesla doesn't own these chargers; they only install them. The property owner owns them once installed, and is responsible for supplying them with power and maintaining them. Tesla doesn't pay for the electricity charging your car, as they do at Superchargers. It's up to the property owner to set rules, or not, for who can or can't use them.
If Tesla intended their destination chargers to be used only by Tesla cars, they could easily put software limits in them to charge only Tesla cars, which is the case at their Superchargers. And also, if Tesla intended only for Tesla cars to charge at their Destination chargers, they wouldn't be installing Clipper Creek chargers alongside their L2 Tesla chargers.
If some Tesla car owner is tempted to "key" someone's non-Tesla car when it is -- quite properly -- using a destination charger as Tesla intended, well then... you can find a-holes among every part of the population, even including Tesla owners.
EV charging etiquette is something for which our society is going to have to come to a consensus. That will take time to develop. In the meantime, I suggest leaving a note on someone's car if you think they are abusing charging stall privileges. Preferably a polite one, since we don't yet have a consensus on charging etiquette. In fact, some people have such notes printed up in quantity in advance, for this specific purpose.
"Honey gathers more flies than vinegar." -- English proverb