I had a thread on this topic a few years ago. (Here) The NAC-Thessalonians commentary that is quoted in the OP (of that thread) has a very interesting take on 1Th 5:3. Because of the wording used in 1Th 5:3, it understands the verse to be describing the world's nonchalant view of a coming "day of the Lord." Paul is saying that that attitude already prevailed in his day among non-Christians, and that the world would continue to have that attitude until that "day" suddenly erupted in the lives of humanity. From that standpoint, 1Th 5:3 is not all that different from Luke 17:26-30, which is why Paul could tell the Thessalonians what he did in 1Th 5:1-2.
It appears to me that many of the comments above are not so much comments on 1Th 5:3 per se, but rather, comments on the WT's long held interpretation of that verse.