Yes unless the subsoil clay is flipped it does the same thing the same year. This picture gives you a sense clay is underneath that loam. If that layer is left intact it just repacks as it was in no time. The good news is it makes great ponds. Berms and swales - terracing - creating water ways
Would not recommend anyone spend this kind of money to learn about double digging https://www.amazon.com/John-Jeavons-Grow-More-Vegetables/dp/B00N4FDTC4
I would spend more this kind of money How to Grow More Vegetables: And Fruits,... book by John Jeavons
I double dug my garden by hand to a depth of 3 feet and added over a foot of organic material. It took me years but it is a great garden now.