I guess the "banning encrypted content" is coming from the instructions to decrypt and upload unencrypted content? It sounds to me more like they are providing

I guess the "banning encrypted content" is coming from the instructions to decrypt and upload unencrypted content? It sounds to me more like they are providing these instructions because without Synology users would not have their encryption managed anymore, and so uploading encrypted data would result in losing the ability to access the data. I don't see anything saying they are banning uploading, say, an encrypted ZIP file.