I'm quite familiar with the phenomenon you cite, Kay. But (as I know you're aware), it's not limited to anti-Apple ranters. Thankfully, they're rather rare here but on other boards they constitute an amusing cult.
I would, however, take some exception to the reference to jailbreaking as an option. I've had an iPad 2 since last April. During that entire time there has never been an option to jailbreak the device. And frankly, I doubt seriously that jailbreaking will be a viable option going forward. Although Apple was blocked by the courts from taking legal action against jailbreakers, they've managed to foreclose the possibility quite successfully via technical means. And I expect Apple to continue to devote major resources to preventing it. In short, for most consumers, even those with the skills and desire to have even a minimally customized experience on the iPad, that option doesn't exist.
The restrictions Apple insists upon aren't a big deal for me. No more than an inability to change the user interface on my TV or microwave. But that's because I expect my iPad to operate much like other "appliances." I do, however, find many of those restrictions to be at best annoying and arbitrary. If anything "cheapens the iPad experience" it's not other tablets. It's the limitations that Apple imposes on the configuration and use of the iPad.
Agreed that jailbreaking offers only very limited flexibility on iPad, compared with on Android devices, which is why people who want to tinker shouldn't buy iPads, IMO. I acknowledged jailbreaking simply because it exists, and some users take advantage of it. Apple is quite unfriendly to jailbreaking, as shown by its repeated efforts to clamp down on it.
I have my own criticism of Apple in that area. (If I buy a device, I should be able to root it, jailbreak it, whatever, as long as I do it at my own risk and don't inflict costs on the hardware maker or expect support outside terms of service if I choose to violate them.) Apple has gone beyond not supporting jailbreaks, rooting, etc., to trying to legally clamp down on such practices, which I think treads on concumers' rights.
Given Apple's practices, though, it seems ridiculous for people to expect much beyond what Apple intends when they buy one of its products. But there's always the option to buy an Android or another alternative instead, and Apple or any other company isn't obligated to serve everyone's priorities.
By the way, JSH, your comment alluding to some cult-like posters just reminded me: You and I have both been called Apple bashers on other threads, I think by the same person, lol.