Mint is now saying that I switched devices too many times and can’t have another eSIM for 120 days. (I had 4 new phones in 3 months due to some indecisiveness and taking advantage of returns/exchanges, which led to a lot of SIM swaps.) They said it is a system limitation and no way to fix. They offered me a physical SIM, but then I am locked out of iPhone and my current Pixel 10 Pro. (Gives me an excuse to re-buy the Z Fold 7, I guess.) I escalated to a supervisor and was offered a partial refund (since I am only on month 4 of 12). They will also leave the account open so I can port the number out. What a PITA.
I have been engaging the online chats with some carriers and MVNOs and they all say they do not do this artificial limitation, but neither will Mint if you ask their level 1 support people. So I guess it's a gamble if I continue to be a several-phones-a-year guy. I'll probably just do a month-to-month for now so I can bail easier if this ever happens again.