"Why must every perl/Tk app look like it was developed in hell (ugly)"

I don't think that this is the case.

"We never see that ugly GUI's in tutorials for VB etc?!"

I've seen a few in my time, and I bet I'm not alone in this.

"Why do we let people get away with making ugly looking stuff in Tk?"

Sounds like you don't want to let people do something because you don't like it (or believe it to be 'wrong'). In my experience life does not work this way. You can offer people alternative way of solving problems, suggestions for 'better' solutions but you will rarely succeed in forcing someone to do anything well.

"Stop it, please! Use zooz and start developing nice looking GUIs in perl/Tk today."

See zentara's reply to Perl GUI.

"and why is screenshots in this article from windows when it's supposed to be an article about making apps in AIX?"

s/is/are/
Have you considered asking the author of the article?

Martin