As a developer I'm just the opposite - I want to give as much attribution as possible from both personal (acknowledge the people who actually did the work, feel-good-about-being-part-of-a-community) and practical standpoints (demonstrating the components come from external projects known to other people rather than part of a personal codebase that only I'm intimately familiar with that the client always has to rely on me to maintain).

But then practically all my own current work is open-sourced which probably skews my opinions.