It's the way it is. Further ranting just gets your blood pressure up. Stellantis, or whoever they are now, isn't changing any more stuff. They tried a new lifter vendor in 2017. Never heard any outcomes. By that point, they were just trying to get their engine replacement costs down. They f'd up the Gen III design from the get go, then threw bandaid attempts at it over the years. I believe it'd require a fundamental re-design of the oilflow from the heads to the lifter rollers.
As I've said, volume manufacturers strive for 6 sigma levels of standard deviation defects. That's something like 1 failure in 1,000,000 (million) products. Technicians in this Forum estimate they see Hemi engine failure from cam wiping app. 5-10% of all Hemi engines they sold. This is 50,000 to 100,000 failed engines per 1 million built. This is why it is not a "trivial" quantity. Yet, the Forum has had success in repressing failure with the proper lubrication strategy.
Reports from other Forums are GM is losing lifters in their 5.3 and 6.2 V8 engines as well. So maybe it's a cheap Chinese roller bearing assembly that can't tolerate borderline lubrication? One of the failures checked on this forum showed the lifter roller hardness was still very high, yet the roller stuck.