That Subaru oil ring part problem was solved with a "surface treatment change", which probably isn't the correct wording, since they've been building great engines for a lot of years. Sounds more like it should be "A parts supplier didn't do the proper surface treatment." ... This sounds similar to what happened with quite a few GM 3.6L High-Feature V6s in the last 10 years of production; the parts supplier for the metal timing chains neglected to do the proper carbonitriding surface treatment. Now, the Subaru rings MIGHT have neglected to get a moly coating; not sure; or maybe they "forgot" to do carbonitriding of the steel rings like the GM chains (??).
Speaking of the GM 3.6L V6, 2011 Camaro (also in Cadillacs and other new GM SUVs), it uses oil at about 1 quart every 1,500 miles which is 'high-ish' but I guess not too high, and being a high-tech high-compression direct injection engine, its probably getting past the rings like the Subaru case.
At least the Subarus have an oil level sensor to warn you! Wish my 2011 Camaro had one; my 07 BMW 530xi does have one of those handy things, full warning available. GM started installing an oil level sensor in very recent years, and its going to REALLY benefit many government/company fleet operators who neglect to check their oil level until its too late (a conversation with a fleet manager who runs it for Oxnard government and police fleets told me "nobody cares enough to check oil, and we sometimes lose an engine, but the Oxnard taxpayers always just give us a new one...").