Disable sample content generation

Sample value generation can be controlled at the field (instance) level, so I'm not sure where you envision that checkbox. Could you post a mockup screenshot or something to clarify the request a bit?

I meant that there is no way(I haven't found) to prevent sample content generation, and it would be nice feature to add an option(maybe globally, maybe on field(instance) level) that leave all fields in default way with default values if set if not - empty.

Eventually to remove sample content generation I had to override SampleValueGenerator service methods, but it would be nice if we can have some sort of disable sample value config.

Maybe you could add a generator plugin that just returns nothing 😅