No you are correct. They obviously don't have the Byakugan activated like regular Hyuuga children who are born from inbreeding. It has mutated into the same changing process as the Sharingan (my theory).Because they don't. :|
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Do those look like byakugans to you?
Here is why to make you understand so it doesn't look like I'm talking out of my ass:
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You can tell me what you think afterwards.