I'm not arguing that 256 is lower then what most like. I'm suggesting that these apps actually aren't running out of memory at all. The error message does not result in the application crashing, stalling or even exhibiting lower performance. In fact the only symptom of this 'issue' is the message itself.
For everybody complaining about the iPad, if it doesn't meet your performance expectation, didn't buy one. Thats the quickest way to affect a change in Apples approach.
As for me I've been typing on one all night, and despite only having 256MB, it's the best experience I've had with a highly portable device.
The app doesn't actually crash when it runs out of memory, it essentially starts reading information off the HD making the apps sluggish and not working properly. Essentially the HD becomes the RAM, that's why you get that warning. Apples idea of a fix is making the warning go away but still having the app page information off the HD, thats not a fix. It's similiar to Safari having to reload the page everytime you try and tab out to another page only worse.
People complain because they like the product and want it to get better. People that don't actually like the product don't buy it and therefore don't ever complain about it. You should be happy that people complain, if no one ever complained we would likely all still own 286's ad be stuck playing Space Invaders!