I think you still have it upside-down? The wrist is the bottom of the tattoo, so while doing pullups it would be inverted. It’s legible while standing, shaking hands, reaching out, etc.

Pretty sure it’s an upside-down forearm; note their hair toward the bottom-left of the photo.

One of the worst apications for generative “AI” is math, as it happens. You’d have to check that all the work is even in the right ballpark, so you might as well just do it yourself.