Why isn’t there yet a very simple solution to solve this?
Moreover, by default, the admin page should not contain that info. It should be blank. That would be more satisfactory in most cases than having links to GitHub, etc., which for technical people are not useful at all. Users should not need to know we’re using strapi or anything.
So, can you at least change the default admin welcome page to just be a blank page (maybe with some modifiable text, which by default is something like “Welcome to the Strapi admin UI”)?