Disagree? With what? That you have to clean, maintain, and sometimes repair items to make them last? It's no different than cleaning and waterproofing your boots or patching a pair of jeans.

It's still BIFL because normal maintenance doesn't count and it is not a ship of Theseus because it will still have a multitude of its original components.

Pretty much everything in the driveline that is a friction surface and/or isn't a heavy casting or made from steel would not last for that many miles, most of it would require replacement multiple times. Things like Bearings, seals, rings, cylinder sleeves and water, oil, injector, and fuel pumps, etc.... none of that stuff will last that long.

>That's the expectation and anything else would be a disappointment.

Maybe to somebody who doesn't know jack shit about the trucking industry. https://www.truckinginfo.com/151205/all-you-need-to-know-about-b-numbers

16 hours a day for 30 years at an average speed of 55mph is over 9.6 million miles, the engine would have to be overhauled multiple times to do that.