

The solution to this is subtle and gentle amounts of 2D Perlin Noise, as well as a touch of Gaussian noise on and around the watermark as well.
The more you can cloak the area around the watermark with subtly increasing amounts of noise; the harder it is for AI to manipulate it without mangling the image in general. (or leaving the watermark behind)
Similarly; leaving smaller artifacts like small signatures or wordmarks embedded in the image also makes sense, particularly small signatures hugging things like lineart in inconspicuous places or hidden in places with intricate detail.
Tools like Glaze and Nightshade also exist to “Poison” images at creation-time such that, if they go viral and get re-shared and AI remixed heavily, they won’t be as easily usable by AI models to knock off your works. Yes, this technique is ineffective for existing works, as an ounce of prevention is worth a pound of cure. These tools use many different techniques beyond just subtly masking the entire image with multiple layers of imperceptible perlin noise. Which is a task that could take you several hours to get to looking right in your favorite image editing suite, as you’ll be poking and prodding and tweaking that slider to maximize protection while minimizing it’s visual perturbations.
This is a good a start as any to market Linux to the common end-user. It’s not about the software being better; it’s about the software offering the user some advantage, like not needing to buy new hardware.
Linux is, far from perfect still. It has a metric ton of “foot guns” that cannot be pointed anywhere away from the feet; the user MUST move their feet away to avoid these “foot guns”. It has a lot of pain points and still lacks polish in some ways. Most things mostly just work; but may the gods and goddesses help you if something for some reason does not work, or does not work as expected for any reason. Coaxing it to work exactly as expected might seem impossible for average users.
Then there’s the issue of Linux having only volunteer support in most cases. Getting help from an overworked and under-interested FLOSS developer is like pulling teeth; even when they’re literally the only person on the planet who can solve your problem
That being said; Linux is free and mostly usable. 9/10 times it does work and can save you a lot of hassle and headache if all your computing needs are basic and predictable.