Does the human spirit not evolve? Why take the time to participate in further rituals to prove what you already feel? For me, it's not pratical. Symbolism is for those who are not inspired or do not feel.
To me, the civil act of de-baptism can only intend to ruffle feathers. That's the greater offense. Is your life's focus so small as to focus on something petty? Live and let live. Your actions are the example. To belittle your life's purpose by intentionally offending others is to belittle yourself.