I have no idea if you are right or wrong on your assessment of Niyazov, but on another of my posts today I was given the same link to his Ruhnama as you list. I read to page 23, and frankly for a Muslim, I thought it was pretty tolerant, and non-hostile to other peoples of the Book. He also specificially said women should expose their faces to the sun, men should not beat their wives and children, and Noah, Jesus, the prophets were OK people. I await more factual information to form an opinion.
I just read an evaluation of the Koran made statistically by another commenter at another post. After reading his evaluation, it seems the Ruhnama may be an attempt to extract the better parts of the Koran, and give his people specific instructions on how to live a decent life
I just bumped into an interesting article re Turkmenistan:
"Nevada Guard helps curb drug trafficking in Turkmenistan"
http://www.nevadaappeal.com/article/20061226/NEWS/112260059
Seems the Niyazov regime was happy to have US National Guard personnel working on projects to secure its borders, to inhibit the flow of opium (Islamoterrorists' favorite cash crop) and other undesirable traffic between its neighbors Afghanistan and Iran. Per the article: "Poppy production isn't currently a problem in Turkmenistan, and the government intends to keep the status quo." The more I read about this odd little country and the policies of its self-aggrandizing late dictator, the more I appreciate how much worse things could have been there under some other plausible leadership.