Again, if someone chooses not to respond, it is their fault and the consequences are on them.
All I remember from the last census is that s guy came into my house, we had a pleasant 10-minute chat, he recorded my answers and left. Don’t remember anything controversial. You are required by law to answer. If you are a law-obiding citizen, that’s what you do (citizen in a global sense). It is called civic duty. Just do it.