Yeah definitely agree here in terms of running a hugh risk owning tesla after warranty. I think if there are enough backlash on those early owners hopefully tesla changes their stance and lower the battery cost. It seems to me they haven't even after all these years.
As for warranty on thr battery, it is a crap shoot really. Gurber can't warranty it because they don't know if another cell will fail afterwords. They are selling a service not something physical so warranty can't apply here. As for tesla, sure they can sell warranty, but given how they have data on this, you are right on why they refuse to do unlimited miles.
In any case the only solution is battery rental where the risk is no longer on the customer but with battery manufacture.