Tesla appears to have specifically made the Gen2 wall connectors incompatible with vehicles that only support basic J1772. There is digital communication between the wall connector and the car now. So, the Roadster can't use them either. I think this change was in direct response to people trying to use the stations with 3rd party adapters.
And, honestly, good for them. I have a bit of a problem with people trying to use 3rd party adapters with Tesla destination chargers to charge vehicles not designed to use them (ie, not a Model S/X). Since Tesla has not released specifications for their charging inlet or charge handles, any adapter that attempts to utilize it will likely be incorrect in either material, size tolerance, or other factor. The way Tesla's charging connectors are designed it would be pretty easy for a shoddy adapter to permanently damage the connector on the charger either due to mechanical or thermal factors. I don't think it's appropriate for these people to be allowed to risk damaging the station, and thus potentially screwing over other drivers, by using such adapters.
Tesla's destination charger list also doesn't differentiate the Gen1 and Gen2 wall connectors, either, so you'd be rolling the dice on whether or not your 3rd party adapter would actually work when you get there anyway.
My suggestion to people who want to charge at Tesla stations would be to buy a Tesla Model S/X. Otherwise use public chargers that are designed to work with your car.