Something I like about home canning my own applesauce is bug-leg-free applesauce is commercially unavailable in stores, its safe to eat buggy applesauce but pretty gross once you have a source of bug-leg-free applesauce. Also if you follow the USDA/BallBook you can't vary lemon content for food safety reasons but you can vary cinnamon and its an eternal experiment to try different ratios. Also there are USDA approved low/no sugar applesauce recipes but in the store you can only buy corn syrup or artificial sweetener applesauce.
Anyway to make a long story short, store applesauce is gross, few hobbies are as delicious as home canning applesauce, and I've had "OK" results with red delicious in applesauce form. Its not pure red evil or whatever as the article claims.
Next story, lets debate Concord grapes, vs Flame seedless, in raw and home canned jelly form.