Yeah, I feel like the article is too quick with its conclusions. Many other problems can be made arbitrary complex and difficult with additional requirements. B

Yeah, I feel like the article is too quick with its conclusions. Many other problems can be made arbitrary complex and difficult with additional requirements. But there are still data structure and standard libraries to provide good enough experience that fits most use-cases. And if you need something extra spicy you need to build a custom solution. The article claims that graphs are often just too big, but yeah, if you ask people who are actively working on graph algorithms they might have that sort of experience. But most programmers and users probably only work with really small graphs.