People get upset with the cost of electricity but probably stay where a cup of coffee costs 10x the cost price and don’t get me started on mini bar prices? They have something you want, if you feels it’s too much you vote with your feet.
OP, it’s good you ask, there’s too much of a culture amongst some EV owners to just plug in anywhere and see if it charges. Unless you know who owns the supply and whether you have permission, irrespective of where the point is, rental property or public charge point, then it’s akin to trying to nick stuff. Some Tesla owners lambast other makes of EV trying to use superchargers and post pictures calling them idiots etc.. what’s the difference? They’re just trying to see if they can charge without knowing any about the charge point rules.