Regardless of engineer/ designer. Lionel has reused tooling multitudes of times. The only things that really change are the electronics.
This truck/ coupler debacle is the result of a tooling change.
The trucks/couplers were the same design for at least a decade prior to this newer design with these issues.
No one seems to know what happened to the tooling for the "quality" sprung die-cast trucks with the hidden uncoupling tab and articulating coupler.
Maybe Lionel should try to "aquire" MTH's sprung trucks . They are a very similar design to the original ones Lionel was using.
In the 2021 catalog, Lionel still shows the "quality" designed trucks as a 2-pack for purchase. If they are still making it as an upgrade option, I really wish they would go back to using it on their rolling stock.