Board Thread:Boruto Discussions/@comment-25192437-20191112175648/@comment-1210805-20191120091724

Kaguya started with a strategy but went crazy from all the power. You can't really take any of her actions as rational, thought through decisions. Even if her concerns stemmed from specific members of her clan, her assessment of their abilities probably wasn't accurate.

It's worth noting that the Kaguya fought at the end of the series was still lacking half of Kurama's chakra.