it's an interesting discussion. IMHO-
There is a difference between "acceptable" and "optimal" maintenance, and though the engineering may have improved, the principles are very much the same- oil goes bad over time and becomes less effective.
I doubt there will be anyone intending to keep their car long term ( say more than 5 or 6 years) who will have opted for long life servicing.
Everything has improved, hence the increased interval. Better oil, purer fuel, tighter manufacturing tolerances, but we do need to remember that long life intervals are meant for people doing longer journeys that have less wear per mile driven.
There's definitely a throwaway attitude these days for cars, many people who get them new really don't give a toss about longevity, as long as the cars work for 3 years.
I'm looking to.keep our 2018 and 2019.Polo GTI+ for a long while, but for me, changing the oil more than once a year or 10k miles is overkill with respect to the modern advances previously mentioned.