He’s exactly right. Many of the companies hired by designers ‘moonlight’, take the patterns of designs, and use cheaper fabrics.
There is a difference between an OEM and a counterfeiter.
Every spring in the world (Practically) is made by Eibach. If you buy a car spring (In particular) it’s just OEM from Eibach with a different name on it.
Look at Tenneco in NY (Rye). Those guys make every damned muffler there is.