In a very real way, it did. Fifty or sixty years ago, people prepared food largely from scratch. Now, a large proportion of the population of Western nations prepares food by poking a hole in the plastic cover, closing the door, and hitting "Express".The microwave let people who didn't want to spend their time cooking do more interesting things. Is their life worse for the wear? Only because food prepared as a frozen dinner is inferior to food prepared by hand. The same is exactly the opposite of software. Software prepared by a professional is almost always of superior quality to a script that Bob wrote in his spare time. Maybe not if Bob is actually very good a programming, which leads into...
Al3x is asserting that this is bad because there's not really much of a path from 'here' to 'there'. You can't get started by running scripts in a shell, or writing AppleScript, or whatever — you get apps from the App Store and that's it.
This is patently false. The iPad is not a primary computing device, and will not replace a laptop or desktop, which by (current) definition is open to these things. Apple is not holding back the iPad-hosted compiler and shell. There is no iPad-hosted compiler or shell. Additionally, the development environment which does get you from 'here' to 'there' is openly (but not freely) available. You can write and run any application you choose, the same way that Apple does, via the Developer Program.