It’s not the so-called crack pots who determine what’s normal oil consumption, but instead it’s the vehicle manufacturers who make that call.
When you manufacture millions of vehicles, there are going to be some engines that are going to consume more oil than others. There’s no getting around that.
So, the vehicle manufacturers set a spec for what is normal oil consumption. This spec prevents the manufacturer from having to replace engines because of slight oil consumption where the engine otherwise operates fine.
So, you may not like what the vehicle manufacturer considers as being normal oil consumption, but then, you didn’t manufacture the vehicle. They did.
So they’re the ones who have the say on what’s considered normal oil consumption.