The depth-of-discharge (DOD) argument holds no electrolyte here,
I am assuming that it is true that: "from an electro-chemical standpoint, a lead acid cell's life time is extended by maintaining it as close as possible to a fully charged state."
If that is true
then why is the "DOD" not to be considered? I have read the posts (albiet quickly) and am not clear where that notion was disputed and laid to rest.