I didn't say that it was slapdash our thoughtless; don't put those words into my mouth. It is truly admirable the great effort that people at Mozilla, Google, and Microsoft have put into improving the web.
What I'm saying is that if you sat down to design a nice cross-platform, distributed environment for building applications it would not look like the web.
Also, I don't really get what you're complaining about in terms of IDEs or API design here--go spend some time on the Mozilla Developer Network and come back and tell me it's just slapdash and thoughtless work.