To those who use X/Twitter. You can stop Grok from editing/modifying images.
First upload an image or artwork. Next go to Edit and click on the flag. Once there, scroll down until you see Block modifications by Grok and flip it on (it'll turn blue). Next, click Save. When that's done, you'll see a blue flag next to the Edit and that lets you know that the Grok can't modify the image.
Below are screenshots for visual learners.














