I would have assumed that this wouldn't require a tool. That you could just click on a user and get this information, just like you can for Hacker News, Reddit, and myriad other social media sites (not to mention old-school forums). Apparently you can't, but I wouldn't have found it remotely surprising if you could. They're all public comments that are tied to the username, right?

Am I missing something here? I honestly find it strange that you consider this such a mind-blowing privacy breach that should require state-level resources to accomplish.