It has become commonplace to gripe about the census.
Invasion of privacy is the most used depiction.
Actually, the census doesn't ask you much that it doesn't already know. One of six American homes were sent the long form, mine being one of them. It went on page after page, asking questions that I thought it already had the answers to. Some friends who also got the long form are clearly displeased by the tenor of the questions. I feel more amused than abused.