That it has a fairly well documented system I suppose? Their interviews are well defined. They tell you what their interviewers will look for. The hire/no-hire

That it has a fairly well documented system I suppose? Their interviews are well defined. They tell you what their interviewers will look for. The hire/no-hire decision is made by a panel not a single individual. Whether tech interviews should be algorithmic or not is beside the point. But they have a very well-defined process. So every rejection and acceptance is probably very well documented.