@davidrevoy I think most commenters are overreacting here. They likely never heard of Krita so didn't have the clue. AI-generated images are hot right now and it looks like many others; they likely saw it in passing and liked it enough to comment.
To address some other comments, AI image generation isn't "stealing" just because it's trained on your work. It's making new works inspired by it. Would you hate people for making works inspired by your work? The AI is doing the same thing.
@davidrevoy if you're more concerned about how much time and effort it takes you vs an AI, you could use those tools too to assist in your work. Generate some stuff based on your work and start from there. Fix up ones you like, or just use it for inspiration.