Postol isn't mentioned at all in that thread.
Postol is VERY highly regarded for his objective analysis.
He's been doing this for decades and is well known for his objectivity.
He cuts through the bullshit like a hot knife through butter.
From Hersh's article:
Theodore Postol, a professor of technology and national security at MIT, reviewed the UN photos with a group of his colleagues and concluded that the large calibre rocket was an improvised munition that was very likely manufactured locally. He told me that it was ‘something you could produce in a modestly capable machine shop’. The rocket in the photos, he added, fails to match the specifications of a similar but smaller rocket known to be in the Syrian arsenal. The New York Times, again relying on data in the UN report, also analysed the flight path of two of the spent rockets that were believed to have carried sarin, and concluded that the angle of descent ‘pointed directly’ to their being fired from a Syrian army base more than nine kilometres from the landing zone. Postol, who has served as the scientific adviser to the chief of naval operations in the Pentagon, said that the assertions in the Times and elsewhere ‘were not based on actual observations’. He concluded that the flight path analyses in particular were, as he put it in an email, ‘totally nuts’ because a thorough study demonstrated that the range of the improvised rockets was ‘unlikely’ to be more than two kilometres. Postol and a colleague, Richard M. Lloyd, published an analysis two weeks after 21 August in which they correctly assessed that the rockets involved carried a far greater payload of sarin than previously estimated. The Times reported on that analysis at length, describing Postol and Lloyd as ‘leading weapons experts’. The pair’s later study about the rockets’ flight paths and range, which contradicted previous Times reporting, was emailed to the newspaper last week; it has so far gone unreported.