I am sorry if these questions seem silly—I am just trying hard to understand what you mean.
But an itemization is semantically better than a list (because it reflects the author’s intention better), and we cannot convert all similar lists to itemizations in one step, can we? Note that the default style sheet can be changed to make itemizations look exactly like they looked before, if that is what you are after.
OK. But I'd rather say do it by yourself and do not do what "author intended to do or say". I also do not understand the changes that make things look "exactly like they looked before".
Moreover, please avoid this formatting in documentation (it is not clear for me how this can be transformed into docbook).