Because then other people control the link. Imagine writing a long print article about a community coming together to care for an elderly holocaust survivor that includes a link for more info. And then Musk (or whomever has the control over the link shortener you use) comes along and decides the link in your article should point at a holocaust denialism site instead. You can’t change the link that’s now printed on paper, but they can change what it points at.
Because then other people control the link. Imagine writing a long print article about a community coming together to care for an elderly holocaust survivor that includes a link for more info. And then Musk (or whomever has the control over the link shortener you use) comes along and decides the link in your article should point at a holocaust denialism site instead. You can’t change the link that’s now printed on paper, but they can change what it points at.
Or the shortened web site shuts down and all that history is lost. Happened to, I believe, the Guardian newspapers shortening service.