yeah basically makes sense
you might clarify that harvesting a large amount of (or any really, but large amounts especially) hay will always deplete soils, even if its slowly, the front page the other day said that Wyoming had hte worst hay harvest its had in almost 80 years, mainly due to the drought according to the paper but it really a symptom of destruction of soil fertility and loss of topsoil and organic matter that happens when you remove a section of biomass for livestock feed, now if the hay only needs to be there for deep snow winter feed, then there is far less that needs to be harvested and far less biomass that needs to be removed, allowing for the topsoil to be built up rather than depleted
and like you said, its a loss of energy that causes this, paddocks shift systems will increase energy on the land and produce, greener, healthier soils, and as a result of a healthy, biodiverse ecosystem, you get healthier livestock and healthier people, which is going to save you more money in medical bills in the long run as well as extending your lifespan through overall health and reduced stress, treating YOUR land right, will result in you having a better quality of life altogether, paddock shift systems are an integral part of healthy land
now i tend to do a lot of ranting and little actual talking

so hopefully you can sort through that to get what you need lol