That is simply not true!
SO has changed a few times over the time, discussions, suggestions to improvements are constantly being discussed in meta. For the most of it - most of the changes that I saw in my 3+ years there were good changes. That's a constant uphill battle that must take into account malicious users and trolls.
And to the article writer: once you wrote a question and people responded it is no longer "your" question. It belongs to the community: as an example I'll give you a 3 lines question that was answered by a few paragraphs answer including screenshots, links etc. Who put more effort into it? the OP or the guys that answered ? Now, if you delete such a question - you're deleting all the useful comments and answers as well. And yes, if you try to do that for multiple questions in a row - it looks suspicious and you should be stopped!
As for the "attitude" towards new users, this happens only when the user posts a bad question, and by bad I mean:
1. impossible to understand
2. impossible to reproduce
3. already been asked multiple times
4. HM
or alternatively, posted a question that is far from perfect but can be improved - but then he/she bails off and not respond to comments.
In all the scenarios above - I'd rather have this question put on hold, until the user improves it.
And in general, when you join a community you should put minimal effort in learning the guidelines of acceptable behavior - if you don't like it - don't use it.
Personally, I find these guidelines useful and helpful.
All in all, I like the interface, I find it as a GREAT resource of learning and developing my personal skills, and unlike the author - I LOVE SO.