Good points you raise! One of the hard parts is letting go of the old content.
I also think it depends on the system and/type of digital content. Pictures may be able to go into an infinite space.
But my reading list was too large and growing. I felt defeated and yet compelled to keep saving articles.
Maybe we can think of time as a form of finite space too? And maybe we should be more caution with items that require time and space?