Sergiy, thank you for taking the time to write these informative posts.
I admit that I am guilty of following Paul White's recommendations as would a sheep and now I shall be looking at things more closely, next time I have to develop code that does this sort of thing.
I still prefer the EXCEPT or INTERSECT versions, because of their inherent handling of NULLs & agree that the EXCEPT form is possibly more pleasing on the brain than the NOT EXISTS ... INTERSECT form.
If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.