Shock horror, STW forumites with no idea of what they’re debating, again!
OP, ‘Christening’ your child does not make them a ‘Christian’. It merely reassures the believers that, in the event of infant mortality, the child’s soul will ascend to heaven. It’s a bit like a provisional driving licence.
As the child grows to adulthood they can decide if they want to take their test, or not. This is called Confirmation.
Christenings need not be a huge happy celebration for the families involved, they can be carried out by any confirmed Christian, in private, and without witness, or even the parent’s consent. Is that Daily Mailish enough for you?
In no way is your child being inducted into a cult. For most people it is merely a celebration of their child surviving the first months of life.
If you want to spoil that…….