I read the comments on that post. My point is that if online harassers have your IP, then they already have all the information that they need.

Besides, they don't even need to own the journal in question to get that information. They could just put an image in a comment that they know you will read and check their own server logs for your IP. You're using the internet; your IP is logged everywhere.

I agree that it's superfluous information, but that's not a reason to think this is something horrific. There's no change in privacy policy here. There's no new information being shared or recorded. There's only easily available derived information from what was already accessible and logged.