i'm really not sure how the non tesla super charger experience looks, that concerns me. Though i assume that must be a somewhat solve problem, if people are using it so.

just use a web browser. I verified I can login through my web browser to manage my account, my products, my payment method. Not the car features though. I have no idea if this is new, but just use any web browser

that's good, there should definitely be some available features for the card, but you can at least handle payment. Though i would still prefer not needing to provide my payment info to a third party anywhere except for time of transaction. Just opens me up to more bullshit.