Ideally, it should also include the problem statement, but that's not in their JSON file and can't arsed to continue working on it – it's just a quick script I cooked up.
I find it very hard to judge the quality of most of these patches because I'm not familiar with these projects.
However, looking at the SWE-bench dataset I don't think it's representative of real-world issues, so "22% of real-world GitHub issues" is not really accurate regardless.