Correct, it reduced squeaks by 90%, but still can hear them on larger potholes occasionally.
Mobile service will actually replace my rear seat (60 part) next week due to stuck pass through section, and they said that when they will be doing that, they will add felt material between the seat rails and the floor on both 60 and 40 part of the 2nd row, so the squeak issue should be resolved permanently, fingers crossed.
My advice here is to ask mobile service to address this, as it doesn’t fully go away with sliding seats back, at least it didn’t for me.