It was not a basic grammar and structure correction but generated most of the writing.
Hive values original content, not content generated by a machine.

For example, if you try publishing this type of content on Medium, your account will be restricted and demonetised.

PeakD is part of the same Hive ecosystem. Just as hive.blog, it is one of many frontends built on the hive blockchain.
Whatever you publish on any Hive frontend, will be automatically visible on all other frontends.