It's just that...
Before this, relying on the abilities of those Deities, during their tracking of Zhou Tian, although they encountered some troubles. But even when they bumped into plants, those Deities relied on their abilities to directly conceal themselves from those plants. As a result, during the tracking of Zhou Tian, although they traveled quite a long distance, in reality, those Divine Families did not alert the plants much, and the number of combat even less.
Probably it was precisely because the journey had been too smooth before that, at the time when those Deities focused their attention solely on Zhou Tian and neglected others, it created that situation. As a result, without too much defense, directly rushing towards the Treants' exit defense line naturally attracted considerable plant attention.
