Well, it couldn't hurt. The problem with cam lobes is they only receive splash off the crankshaft to lubricate the contact patch. I assume that little hole is allowing oil from the lifter oil gallery to migrate through to the bottom of the lifter, so it will get lubrication to the lobe as soon as the oil pressure comes up. I assume they are limiting the flow, or you could reduce oil pressure.
On the other hand, cams and lifters in these engines usually last for decades without issue. The killer is when the engine sits for long periods, so the oil drips off the cam lobes. Then condensation and such allow corrosion...and hardened steel is more corrosion sensitive than mild steel. Then it tops off with a dry start up until the crank throws enough oil to re-lube the cam lobes.
The key to long lifter life is to never go more than a month or two without running the engine.