You can make an engine run forever by keeping replacing parts that wear out.
The most durable I have seen was a Toyota Corolla diesel in Asia used as a taxi with 1.4 million kilometers ( 870,000 miles) without any internal work. The next longest was an old Cadillac used as a taxi which had nearly one million miles on it and still was not using oil.
Nearly all those highly publicized Volvos have had considerable engine work done on them.
There is a guy in town here who has an 80s Toyota Celica with nearly 1.9 million miles on it. The car came from the desert near Las Vegas and was used for courier service. Not sure how much engine work was done on it but it has the original engine.
Heavy duty diesels used in Class 8 trucks routinely get a million miles on them between overhauls..
Our own experience was with a1984 Chevy Impala with a 302 V8 that was finally sold with over 300,000 miles on it and had only the fuel pump and timing chain replaced. The reason for sale was corrosion. The kid who bought it for $700 drove it for several years.
The video tells me very little.