When i view things in a certain way it is based on my own personal experience as related to my orchard or those nearby. You are no doubt correct overall for many people. In California, all they plant usually are dwarfs. In my soil trees are very slow to come into production at times in addition to other things stated. Planting an orchard is a lot of work which i only want to do once. Naturally i respect your opinion as well. Short lived trees are a very poor choice for me. Dont want to plant new trees when i’m retired. Naturally i’m looking at this through the perspective of a pear farmer. Pears for your heirs is not always just a saying. A peach or nectarine farmer knows they can plant dwarfs and harvest fruit in 2 or 3 years instead of 5-12 years for pears.
“Dwarf trees will live for a maximum of about 20 years – but in our experience they don’t even survive that long. They will often need to be replaced much earlier due to problems with disease, poor health or poor production.”
“full-sized apple trees on standard rootstock will live for about 100 years on average, sometimes even more. (The apple tree that is thought to have been the oldest in North America died in 2020 at the age of 194!)”
Standard-sized vs dwarf rootstock | Hardy Fruit Tree Nursery.