No reason to shout. Let people have their hobby!
I think AVR and similar inexpensive microprocessors are a great way to get started in "not purely software" hackery. And if Arduino and the likes make it even easier, the better! Just because not everyone was born with a keyboard in their hand, typing into emacs, doesn't mean they don't have the right to explore the realm of programming with whatever editor and platform they like.
Sure, there are a lot of applications these 8-bit MCUs are ill-suited for, but let them figure that out by themselves. It's a learning process, but you in your arrogance shout at AC because he/she wished for something you think is impossible. And maybe it is, but the way you communicate that is somewhat arrogant.
There are plenty of paths to becoming an educated hacker and if it's via a Java-based IDE on Windows that's just as well.