Can you go into more detail about what you mean by "duplication of data"? I worked on a team whose product uses Hasura; my understanding is that data still comes directly from Postgres, even if Hasura is sitting in the middle. Where is the data being duplicated?
They're saying products like Hasura suffer from this, and Hasura doesn't.
Nope, they're saying that products like hasura resolve the issue with the duplication of data. Or to put in another way, you don't need multiple stores like kafka with redundant data storage. Just use hasura.