agree... With all respect for any forum or posters, I don't think thaivisa, for instance, has the authority to be taken as an official information.
It's all very well to give a website adress, but who is behind the website ? After clicking this adress, I found a homepage with articles dealing with Qantas, TWA (indeed), and Air New Zealand, looking like advertisements, as well as an advertisement for Etihad.
Although anybody can write any BS in Wikipedia, it seems that ICAO auditors found serious gaps in safety standards and budgets in Thailand.
I had a dispute somewhere else claiming a certain airline had poor safety records as not listed in website listing safety approved airlines (what that could ever be, btw). The website was not an authority one but a sort of forum on aviation. In addition that list was dated November 2004: the airline we were debating on was established December 2004!!! Quite tough to be listed if you don't exist yet!
Fact was that that guy had a negative opinion on that airline based on a "no-fact" and not on official website.
Rumours tend to become facts through the web.