It's so awesome that I can let my kid paint with Krita and let her enhance the picture with AI live. She wanted to have an AI picture editor on her phone but I didn't like the privacy policy. But Krita AI Diffusion came to the rescue.
After testing it out myself I showed her Krita, the most important tools and how to use layers and before I could say anything she was off to paint a nice landscape. When she was finished I actually got to enable the AI plugin and show her the ropes around that. And after enabling live painting she went ham and added a phoenix and a giant hand.
Hardest thing about it was that she had to describe what she wanted in English. But she's already learning that in school so it shouldn't give her too much trouble in the long run.
Anyways, FOSS rules!
Not quite a "gaming PC" since, at least if they're using something like Nvidia's Hopper GPUs (or relying on another service that does), they're not designed for gaming (and in the price range of $10k-$100kish), buuut if you ignore the finer details then fundamentally it's basically like that. They'd send the image to their "very expensive gaming PC server" where the inferencing would be done.