This is simply not true, you can visit forum.watch.ru or another. For example 2414, and 2416 movements, there are USSR(good) and Russian(bad) variations. These variations differ in every detail due to the different thicknesses of the mechanisms (modern ones are slightly thicker).It’s disgraceful that the manufacturer didn’t change the mechanism code despite making such significant design changes.

Not sure what my watchmaker meant by that but I suspect build quality is bad in the modern Russian variations of the movements.