All true about lifter failures at the lobe. But apples and oranges.....Most of this discussion has been about lifters 'collapsing' (not holding oil), not lobe-to-lifter failures.
A lot of time, that's not the failure of the lifter either, but rather the fact that people pump the lifters up with oil before installation. That's incorrect procedure, because it can put undue stress on the lifter plunger right off the bat and cause the plunger to fail. Regardless of how they fail, IMO, true lifter failures due to actual defects are rarer than most people realize. People always tend to amplify the bad. How many success stories are there in comparison? You'll never hear about those.