I don't think anyone "refuses to believe it." Rather, I think we're just trying to figure out exactly what's happening so that we can avoid it ourselves. Problem is, if you ask any questions you get branded an "Apple fanboi who refuses to believe it" or worse an idiot or a troll.
I would guess by this time, Apple Engineering (the entire team has probably been chained in the lab since this whole thing started) at this point knows exactly what is going on, and has several proposed fixes on the table. I wouldn't be surprised in the plan is already in motion to get these fixes out ASAP.
I would guess the fixes are:
1. Dope up the Al alloy a bit to stiffen it - shaves a few pennies off the profit margin but this is a drastic situation.
2. Get rid of the cutout for the logo - not sure they are going to do this because then non-bendy phones would be easily identifiable and everyone would be clamoring for an exchange, costing them a ton of money.
If they do #1 only, then they can just start putting those out immediately, leave the bendy phones out there, and then just replace bent ones as they come in. Probably only 20% of those (wild guess) will end up being brought in by customers within the warranty period - which is probably less than the number of return demands and the PR disaster that would happen if people started demanding replacements with the stronger phone because it was obvious which was which.