It doesn't work in his mind because he doesn't understand how it is designed to work.
I've ran Andersen no-Sway hitches on three different tow vehicles and two different trailers over a 4+ year period and I can tell you that they absolutely do work and I've never had any issue with them. I have used traditional load bar WD hitches over the years as well.
If you have a heavy trailer with a tongue weight over 1k lbs, then an Andersen No-Sway is likely not a good application, anything less and they work wonderfully.
So the "expert" on the other thread who is spewing misinformation is either inept or a troll or both.....