After doing my own research (including seeing the above discouraging content online), I decided to take a chance and order two adapters for Level 2 (Tesla Destination Chargers) and Level 3 (Tesla Superchargers). They worked:
Level 2:
Viptoo DD003A-BK Adapter for Tesla to J1772 EV Charger [Only to J1772], Converter Up to 60Amp 250V AC with Press-Safety-Lock, Compatible with Tesla High-Powered Connectors, Destination/Mobile Chargers,Black,
Level 3:
LWbrazl TSL-CCS1-L NACS to CCS1 Charging Adapter, 250KW Tesla Supercharger, Fast DC Charging at Tesla Supercharger Stations, Electric Vehicle Adapter Compatible with Ford, Rivian, GM, Volvo EVs