To comply with the task in the tutorial, I was prompted to use the Content-aware fill icon in the Contextual task bar. I do not have a Content-aware fill icon. However, the Remove icon completed the task needed.
It looks like the tutorial needs updating to match the current contextual task bar options. If you wanted to use Content Aware Fill at that step you will find it in the main menus under Edit > Content Aware Fill.
Although I don’t know the steps and goal of that tutorial, if the goal with those steps was to remove the hand, then you did the right thing by clicking Remove instead.
I’m thinking that Adobe might have removed the Content-Aware Fill button because the newer Generative Fill and Remove features kind of fill the same role as Content-Aware Fill, but are proving to be much smarter and more useful. I am actually wondering how many people will still use the Content-Aware features now that Generative Fill and Remove are already better and keep improving.
There is still a strong case for content aware fill where generative AI is prohibited in a workflow. AI generated fill can be good but is also banned in some scenarios.
It looks like the tutorial needs updating to match the current contextual task bar options. If you wanted to use Content Aware Fill at that step you will find it in the main menus under Edit > Content Aware Fill.