Docs feedback: Confusing Cloud Native Hybrid reference architecture nodes guidance

https://docs.gitlab.com/ee/administration/reference_architectures/2k_users.html#cloud-native-hybrid-reference-architecture-with-helm-charts-alternative shows what appears to be node groups but then states:

In production deployments, there is no need to assign pods to nodes. A minimum of three nodes in three different availability zones is strongly recommended to align with resilient cloud architecture practices.

So is one or multiple node groups recommended?