While I agree that having a super detailed UA string sent isn't in the best interest of my privacy, there is a sort of "tragedy of the commons" problem if every

While I agree that having a super detailed UA string sent isn't in the best interest of my privacy, there is a sort of "tragedy of the commons" problem if everyone did that. If website maintainers/webmasters/web developers didn't collect that data, they wouldn't know what platforms to optimize and account for when designing. (Yes, best practices dictate that a website should work well on all platforms, but best practices aren't always followed.)