That post is old but not much has changed since it was written.
The chat server itself is not a problem; we can run that forever without a threat because it's just a standard chat server -- there's nothing even remotely COH-related about it.
The Paragon Chat software is in a little bit of a gray area but is probably fine.
The one thing that is likely an issue is distributing the Issue 24 beta client. That's why the Paragon Chat download does not provide the client files and requires you to obtain them some other way. We don't host any of them at Titan, and while a lot of users do post about it, we have gone out of our way to never endorse the use of third-party installers like Tequila that download copyrighted files.