That's the only logical thing I could think of. That's why the seats are "to be determined".
I don't understand how the website Vividseats has tickets for sale when the presale hasn't even happened yet. I'm not feeling confident about the presale now that I've seen this. I think the only way to finally put a stop to this is to have to provide the credit card that was used to purchase the tickets to enter the venue. Otherwise, it may slow down the scalpers/bots but they'll still be able to get access to tickets, just not as many.