If it is a simple matter of removal of a name from parish lists then that could and should be considered for all it is, perhaps there are other issues at stake here, are the parish lists used to determine the amount of parishioners, in which case this move could have consequences for financial aid either from the state or Rome. Which makes greater sense in an age of public austerity and when the RCC has been closing churches and merging parishes or masses.
Although if this person were to insist that they wish to have themselves removed and disassociated that's fine, I even dont mind if they are choosing to remove themselves symbolically from the congregation, however, it would be a new development in secular hostility towards the church if individuals shunning the church in adulthood were so driven in doing so that they are unhappy with the historical "lapsed catholic" tag. Not that I would not believe that that would happen, I see lots of threads attacking religion and religious belief, let alone institutional or organised religious tradition, on this forum alone. It is probably not too mistaken to consider that as representative.
There is no element of abuse or usurping of an individuals right or freedom of conscience within sacramentalism, including baptism, there is no binding, if you dont believe in the ritual it should be of no consequence to you, if you do then it is in fact a form of exorcism and forgiveness of sins and positively in the interests of the child's welfare.
What I suspect IS the problem is that atheists and secularists and those who resent their personal histories and family traditions and have betrayed or abandoned them resent the symbolic induction into a religious community and the continuity and renewal it could provide to the very things they dislike. It is cloaked in all sorts of high minded language about respecting choice and independent formation of opinions but in reality what is desired is the non-religious and secular secondary socialisation, in home, school and community which it is hoped will translate into choosing secular and anti-religious opinions in later life.