Propaganda, à la Google (emphasis mine):
information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view.
It has nothing to do with whether the information is true, or even popular knowledge, rather what matters is that it is promotional, and often biassed and/or misleading. It's far more about how the alleged facts are presented than in the veracity of the facts themselves.
We are not an Islamic site, and we are especially not a site for debate or apologetic. We are a site for neutral and academic study of the topic of Islam, and propaganda in general is neither neutral nor academic. As Jon said in an earlier meta post,
Answers should answer the question asked and not try to wedge in alternate points of view.
In the case of the answer posted by OP there are multiple examples of "wedged in" information which do nothing to answer the actual question, but do promote an anti-Saudi/Salafi/Western viewpoint.
The question referred to in OP, for example, is neither explicitly requesting a Shi'ite opinion, nor is it asking about who to "blame" for the divisions in Islam, so the entire last sentence is wholly irrelevant. As is the jab at "certain powerful governments in the region." As is the jab at "certain Wahhabi cults within the Sunni Salafist traditions."
These inserts are clearly propaganda. Not only are they biassed, being presented from an obviously "anti" point of view, they are also so vague as to be useless. And the very fact that the first paragraph removed "certain Wahhabi cults" from the equation entirely (relegating them to a side-note) just implies (intentionally or not) that they're not even Muslim which is exactly the sort of sectarianism that we've been struggling against since the earliest days of the site.
If all propagandist material were removed from the answer, focussing only on the parts that are actually relevant to the question asked, you'd end up with the following at best:
Yes, it is by far the greatest division in Islam. However, both Shiites and Sunnis adhere to the same God, the same book and the same prophet. So by definition they all belong to the larger group of muslims. Both groups also consider each other to be muslim.
Which is barely even an answer — it definitely misses out on all the nuances of the question that was actually asked — and involves gutting roughly two-thirds of the post itself.
As for the second question you link to, I don't understand how you could even begin to compare them. Unlike your post, the top-voted answers to that question…
- …are providing explanations for why there are so many radical Muslims because the question is explicitly asking for those reasons,
- …are focussed on answering the actual question asked without unnecessarily adding tangential or unwanted facts,
- …are still written in an unbiassed and professional tone without accusatory language or finger-pointing,
- …are full of specifics rather than vague allegations and opinion.
Presenting facts when they're requested is not propaganda in and of itself; as I mentioned before, what matters is more how the facts are presented than the facts themselves.
You would do well to read up on the difference between objective writing and subjective writing, but fully explaining this is well outside of the scope of our site (might I suggest Writers.SE?). In short, even when objective facts are involved, propaganda is still very much subjective writing.
And as for the chat-related side-note, I might've carried a discussion with you if you'd come in politely and reasonably. As a rule I don't respond well to hostility, and I generally consider users who come out of nowhere and hammer me with questions and arguments that I've so-far expressed no interest in to be hostile. I told you I was not interested in discussing the topic with you because, quite frankly, I was not interested in discussing the topic with you.
You were suspended because even after that, you continued to argue with me. We expect users to behave respectfully towards each other at all times; coming in not only with hostility but with a blatant disregard for other users is not respectful by any stretch of the word, and is wholly inappropriate.