This is more my experience. Bought my first TS shirt last spring, and I've picked up six or seven since. The fit's excellent for me (though I do wish the sleeves were somewhat longer to accommodate my monkey arms), and I've always been impressed with construction. I've had some issues with sizing their pants (was a 32 in one jean, 33 in another, and a 35 in the camp pant), but I think I saw that they're now posting individual measurements for each edition (I might be wrong). Point is, I personally have never had any construction complaints. Plus, their customer service really is the best I've come across.
Apologies, probably should not have said threading in my original post, rather rather it was the stitching that was coming apart at the neck and cuffs. The fabric and fit is great, and the customer service has been great as well in addressing all those issues. I also dont doubt that there quality has improved since 2011/2012 when I first bought my shirts. But I will still wait and see if anything catches my eye, and if other people are also having any quality issues.