[HELM CHART] Misunderstanding about nextcloud and nextcloud-data PVC access type

[Buuuntyyy]

Hello everyone,
I'm currently customising a bit the nextcloud-aio helm chart.
My infrastructure use Rook-ceph as storage provisionner (migrated from longhorn).
I just noticed that the nextcloud-aio-nextcloud PVC is RWX and nextcloud-aio-nextcloud-data PVC is RWO.

After searches on the Internet, I found on several forums that it should be the opposite (nextcloud-aio-nextcloud RWO and nextcloud-aio-nextcloud-data RWX) such as nextcloud-aio-nextcloud PVC store configuration.

I'm not sure about the information. Can someone help me ?
Does nextcloud-aio-nextcloud-data only stores users data ? (files, images...)

Another question, is nextcloud-aio made for multi-pods deployment (replicas, loadbalancing...) ?
Thank you for help !