Tires wearing out really quickly?

We have driven our ioniq6 about 12K miles so far. Insides of the front tires are almost entirely worn out. Dealership says this is possibly due to an alignment issue, but we haven't experienced anything drifting with the car while driving for the period we've had it. Wondering if its a manufacturing issue, or perhaps due to the weight of the car?

These tires are expensive and dealership recommends replacing them ($400 a piece) - wondering if anybody has had any success claiming it from Hyundai under warranty? The dealership says that I would need to get it replaced and then directly claim some portion from Hyundai. I'm not sure if that's going to work.

Overall, the car is great, but the service issue and Hyundai's service network is pathetic. I'd love to recommend the car but just can't!

Image of the tires: https://imgur.com/a/KYUbzXL