You have a picture of yourself or a friend, with a watermark on it. You remove the watermark. Now the picture looks nicer when you look at it. Why's this difficult?
It's difficult because people are trying to figure out where you obtained this hypothetical watermarked image from (that you can't get a non-watermarked version of) and what you plan on doing with it after besides looking at it yourself, and how this becomes something for sale to "enterprise-level clients".
From their website:
> The features your business needs to eliminate watermarks for good.
> Whether you're a photographer or a social media manager, let our AI handle the cleanup so you can focus on creativity.
They seem to think that this is a need businesses have.