Unlike Tampermonkey, this extension is fully OPEN SOURCE and you can see the entire code for all versions on Github.

The configuration options are simpler than TM. This is better for most use cases. I've never had a problem with a script not working.

Cloud sync is nice for backup or using multiple browsers. In Google Drive, it stores data as "app configuration" data so it doesn't clutter your drive.

Unless you have a specific use case where you need TamperMonkey, you should probably use ViolentMonkey.