As others have pointed out, this is no surprise at all. For serious business work, the word processing apps and excel charts leave a lot to be desired. Also, as the article pointed out, input just isn't where it needs to be. Yes, sure, you can attach a keyboard... but that defeats the purpose. Having a better file management system would also help. There are often workarounds to some of these issues, but that's just it - you have to constantly work around the limitations of the machine without any substantial benefit.
I know there are exceptions, and for some folks, tablets are perfect. But if you do any kind of content creation or manipulation as part of your job, it's hard to see how a tablet can replace a laptop. It's a great laptop companion/temporary replacement device, though!
I am afraid the article is the same kind of rubbish that newspaper has been spewing out for years. It is a fluff piece that makes sweeping assertions and throws out anecdotal evidence to support some rather tenuous claims. No offense to the OP! It is a fun thread. But, I don't put much stock in the piece.
Input is fine. Exactly where would it be? Presumably, you mean it isn't at the level it needs to be. I type on it all of the time without any real issues. I prefer the keyboard, because I can go much faster, though. The keyboard doesn't defeat the purpose, because when you want to read (on the train) you pull out the iPad, and when you want to work (in a coffee shop) you pull out the keyboard. It is flexible and compact. I get a lot done on it (I have another thread in the forum explaining in detail). It is certainly a powerful content creation device.
The problem I see in the examples cited in the article, and I think you pretty much said this, is that the iPad is a great device for supplementing other ones. I would say 90% of my time is spent on the iPad, but I have to have a computer, and I would never replace my computer with the iPad. The companies in the article threw money at the iPad in some bizarre attempt to get people to do more work, sort of like buying you 100 crayons to write an essay.
Knowing what the iPad can and cannot do, there are a ton of things that you can use it for, but equating it with a computer would be a mistake.
The Galapagos is such a joke. Seriously. Hilarious. Yet another dead-end gadget created for the domestic market to waste money on.
Taking a cynical view, I have a feeling companies (who pay for train rides) want to find a way to squeeze work out of their employees while they are crammed on a train (even when you get a seat, you usually have very little space), and they are frustrated that (big surprise) people cannot work terribly well standing on a moving platform (the train floor) in a room full of people (the train) with their ipad held in front of their face (great for reading, but no way to type there). Nevermind the energy saving initiatives of having fewer trains (more people than ever now) the air conditioning off (they crack the windows, but it does little good), and the lights low or off in places. lol.