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human
[Naruto Shippuden] Why Obito didn't capture Naruto when he was a kid?

We know Obito is around since Naruto was born. Obito is pretty broken with kamui and I'm sure he could go to the hidden lead village unnoticed at any moment. 

Is there any canon explanation or is it just bad writing?
gpt
I always assumed it was because Naruto was basically easy pickings at any time and Obito had more important things to worry about like orchestrating world politics for the next 15 years. The tailed beasts didn't factor into his plan for a long time and when they would eventually he had created a whole organization that he would handle the captures for him.