Best explanation I've seen so far for Hemi cam/lifter failures

So the Reignited Cycle and Auto guy on YT did a test on a high-mileage 5.7L where he installed a HV Hellcat oil pump and it bumped the hot idle oil pressure up from something like 10-15 psi to 25+. He reasons that should help with lifter failure due to extended idling.
10-15psi at idle seems incredibly low. Even25 does?
Quick google search shows 25-65psi depending on temp and rpm. Must of been a real high mileage engine?

Mike