I am unclear about Tesla charging stations. Can we pull up to any Tesla charger, use a suitable adapter and start charging? If not, what’s the point of the Tesla tap ?
Depends on the charger. Some are free, others not. All run thru the Tesla app unless it's a friend's garage charger. You pay thru the app, either way...
The only way you can use a supercharger currently is if you're close to a location that has the MagicDock, though you'll be limited to 50kW speeds as others have noted in other threads. They're only at a few spots currently in NY, CA and TX.
Relevant exception: TeslaTap had a chip that mimics a Tesla, allowing you to use even destination chargers that limit it to only Tesla vehicles. Nearly all don’t, but a few may, as it’s an option the owner can set.
Lectron and other adapters usually don’t have that chip, as I understand it.