Yes, user agents are a mess (see this comment for non-Apple examples: https://news.ycombinator.com/item?id=23910637 https://news.ycombinator.com/item?id=2391063

Yes, user agents are a mess (see this comment for non-Apple examples: https://news.ycombinator.com/item?id=23910637 https://news.ycombinator.com/item?id=23910637). They're not a good way to detect features as a web developer.