> another example are stories of electricians charging more to people who want EV chargers installed because they already paid a premium to buy the EV.

I've heard people work around this by getting a plug-in charger instead of hardwired. They get a 14-50 plug put in saying it is for a welder for their home workshop or for an electric range or an RV hookup for when their parents visit or something like that. A clothes dryer outlet works too, but usually won't support as many amps.

All those, except the clothes dryer, still do give some indication you probably are reasonably well off or have well off parents at least, so might invite some gouging.