Scott Adams thinks differently. See
http://www.dilbert.com/blog/entry/high_ground_maneuver/
It is _not_ an Apple problem. It is a problem for every single manufacturer in the industry. So it would be rather idiotic for Apple to say "sorry, it is our problem" when it is everyone's problem.
You can also look at the blog of a professional antenna designer at http://www.antennasys.com/antennasys-blog/2010/7/14/iphone-4-meets-the-gripofdeathinator.html . Interesting little fact that the "Vulcan Death Pinch" actually improves reception on the iPhone 4 (check it out), unfortunately that is not how people hold _any_ phoneBut seriously, he found that while worst case the iPhone 4 suffered more than the iPhone 3GS, it still produced better results under _all_ conditions. That's what Anandtech found as well, that the iPhone 4 can receive calls at 8 dBM less signal strength than any other phone.
Big TOTAL BS!!
iPhone has short circuit problem and _not_ how you hold it problem. The BIG difference between all those phones and iPhone 4 is that you only have to touch the spot, you don't even have to hold it in your hand. How difficult is it to understand? It's got nothing to do with "covering antennas"!!! So showing other phones is pathetic. On top of that none of those phones drop calls on you!!! But hey... average user will be happy...