That's true but it's not the easiest thing to access all of it since the transfer container has limited storage. When we need is the transfer container to provide access to all storage within the outpost, not only what it has in it's container.
I set mine up so I have 1 small storage in the centre of the extractors / resource generators linked to all of them, then link that small to a mass storage wall, then link one small storage beside the landing pad. This gives me a line of storage units beside the landing pad that has each resource funnaling into it for easy access. This was the best I could come up with but still fails due to how basic cargo links are. There's no way to split cargo coming from one transfer hub, it's all or nothing. Transferring 3 resources from one outpost to another, there's no way to split those 3 on the incoming side into separate storage.