It’s all just part of their addons, so you choose yourself if you want AI. You can even choose to have local AI, if you don’t want to use an external AI, which I believe is ChatGPT.

The Hetzner Storage Share lacks a lot of features that Nextcloud IONOS have. Correct me if I’m wrong, but I don’t think Hetzner has an office suite for Nextcloud?

No. There’s only really one port for I2P specifically that you could open, but even that is not necessary.