Think his statement has more to do with if the movement stops working since the movements are not the best on these.........
I would edit your comment by one word. Should read "when" instead of "if" in your sentence.
Should read: "more to do with when the movement stops working".... etc
Other than that one word your post was spot on.
I haven't bought one of these cheap reps for several years now, but many of our experiences are similar. My experience was that the movement typically lasts somewhere between a few days to maybe a couple months at best.