You can either acknowledge this, and use it to your advantage to help them be the best future self they can be, OR you can say that it is “manipulative” and instead leave their formation up to chance.
This doesn’t sound right to me. I think you could find certain things “manipulative”, and so look at specifically doing/saying things that weren’t manipulative. For example, what if you told the children of their own bias, or you told them, “Don’t believe what I say just because I tell you that you believe it.” I’m sure your intentions are correct, but I would think the interaction could be consistent with “ordinary adult interaction” with regards to manipulation and so on.
This does not sound believable to me. I very much doubt that a perfect agent would find these sorts of questions to be well-defined. It sounds like you’re talking about the likelihood of a bulkhead failure or something completely technical … when this is not technical at all.