Victim-blaming is illogical. Even if it were true that only idiots that abuse their iPhones are bending them (and it isn't true), the other manufacturers of similarly-sized devices are not having "bendgates" of their own. Therefore Apple rightly deserves to be mocked and raked over the coals for what is, at the very least in comparison to other manufacturers, a very serious engineering screw-up. Even if one could objectively say that it isn't a design flaw (and it most certainly is), they have put out a product that is weaker than their competitors products and made themselves look quite foolish in the marketplace. Apple fans should consider that to be unacceptable on the part of Apple, rather than being obnoxiously dismissive of the concerns of the market. The many thousands of bent iPhones that will soon be in the wild will each be excellent advertisements for Samsung. Is that what you want? It matters little how they became bent, only that they are bent, and they aren't being bent on purpose (except for that one idiot on YouTube). The people accidentally bending them are fellow Apple/iPhone fans, not idiots and deliberate saboteurs.
If you are truly Apple fans and want to have even more excellent iPhones in the future, which the competition cannot mock even if they try, it is only logical to join the chorus of those who are acknowledging and mocking bendgate. Let the competitors have their day (month/year) of gloating and mocking. Help Apple learn the lesson that they strayed a bit too far this time in the pursuit of thinness and lightness, without paying sufficient attention to durability for the product's intended purpose of being a personal phone that you carry with you at all times. If it is not suited for that purpose next time they should market the Plus as a smaller iPad mini that can coincidentally make phone calls, not as an iPhone.
Apple should be really worrying if it's indeed that many.
Indeed they should, and indeed there will be. Consider the following:
1. There will soon be tens of millions of iPhone 6 Plus units in the wild in the next several months. Based on some preliminary data I estimate they will be around 10% to 20% of total iPhone 6 sales. Therefore, tens of millions.
2. Many bent i6+ units will wind up with cracked screens, and thus be very likely to be rejected by Apple "Geniuses" for warranty replacement.
3. Many users with bent i6+ units will have already stretched their budget to get them and will not be able to afford to pay for a non-covered replacement (or AppleCare, for that matter, which might have allowed them to replace it for $79).
Ergo, I believe it's a very safe bet to say that within a few months there will be many thousands of bent iPhone 6 Plus units in the wild that Apple will refuse to replace and users cannot afford to replace until their contract expires. Possibly even many tens of thousands eventually. Probably still a fairly small percentage of the overall number of units sold, but each one will be in the wild for months or even years, and each one will be a terrible, negative advertisement for Apple's supposed build quality for anyone who sees it.
Apple deserves the mockery it is receiving, and it will unfortunately go on for years, long after it is actually relevant.