Maybe part of the problem is that CI is performed at hospitals and there is little incentive for them to improve. It is covered by insurance and that’s the driver. Lens implants are performed in clinics that are often privately owned and use other outpatient facilities for the actual surgery. They are focused on making a profitable growing business, so improvements come naturally to them.
My experience with my CI was that the hospital had their own ways of doing things even to the exclusion of some of the advances in technology that were available to them from the CI companies. Most fought for years using the RW for entry. Data on successful trends has been very hard to find in published journals. Ditto complication trends.
It is still highly dependent on the skill of the surgeon operating by feel or in the blind. Practices change slowly.