Non of the modern saws have been around 30-40+ years to prove your point. It may work that way some times, but when the going gets extreme the lower oil content most normally fails sooner. There is no doubt by my experience that you can get more good life on an otherwise marginly worn top end by running a richer oil mixture often enough its worth a try if you don't want to go through with replacing those parts sooner.
I accidently straight gassed my 034 super about 6 weeks ago. 1st poured in straight gas on about 3/4 tank, ran it to the bottom until it quit, then filled it up with more straight gas and locked it up tight in about 5 minutes. Got it home, removed the muffler, piston looked ugly scoured but I poured in some oil, got it to turn over, put the muffler back on, had about 1/4 gallon of my usual 28 to 1 non synthetic mix, so I added about 1 1/2 oz, of Stihl ultra synthetic to that which I estimate made it about 16 to 1. Fired it up, made a few cuts, felt strong so I took it to a tree job the next day and ran about 1 and 1/2 tanks of of fuel cutting blocks up to around 20" in diameter. Couldn't tell it lost any power compared to prior the seizure. There is no doubt in my mind if I had to run 50 to 1 the engine would be trash.
I don't know how long this 1 will last now, but I did near the same ( locked up but not scoured as bad) on an 034 super about 15 years ago, and it being my only saw most of the time never failed me ( used it at 25 to 1) and was still running strong when I sold it about 7 years down the road.