I like it too, and I believe I first encountered it here. To me it indicates that unlike a child I can think and decide for myself. I don’t need to be “taught” everything, I can learn and discover for myself. And it evokes Paul in 1 Cor 13:11 (NRSV):
When I was a child, I spoke like a child, I thought like a child, I reasoned like a child; when I became an adult, I put an end to childish ways.
And I don’t think this takes anything away from Christ’s admonition to be childlike.