One more thing. If a non-jewish baby is adopted and megayer, when they turn 12 or 13 they have to decide for themselves if they want to be megayer. However, when they are older if they feel that they were coerced in any way when they turned 12/13 to be megayer and they didn’t choose to 100% on their own then it wasn’t a kosher geyrus and they are not Jewish.
Why is that? Why should there be a question that a 12/13 year old could be coerced and is not responsible enough to make the decision 100% on their own? Why should a question even arise. Would a child worry that if they chose not to be frum at 12/13 the family would abandon them? Are they responsible enough at that age to decide for themselves if they want to be frum or not or if they want to be a part of the family or not? Why should they have an “out” when they are older to say that they weren’t sincere at a younger age and they were coerced or afraid to say otherwise. Even a ger who wants to be frum might tell his RAV I wasn’t sincere at 13, I was afraid to say “no” or I didn’t really understand the procedure or didn’t take it seriously, do I have to do it again?