No, it isn't. My understanding is that you don't "sign up" for the group lists. You just check them via a search "to:libertarians". I maintain a list of my own for these Pursuit of Liberty/Defense of Liberty series, and I bump people individually; among them I bump {libertarians}. I used to put {libertarians} in braces, but that practice is not supported by the new software. When I did the bump (with the icon) the software forced me to exclude {libertarians} and "ll&poh", apparently, becasue of the unusual characters. It also silently discarded all the dearly departed (deported) Freepers. A minute later (#3) it occurred to me to try "libertarians" without the braces and it worked.
If ll&poh still exists under a different name, and wants to stay on the list, let him contact me. "ll&poh" screen name no longer exists.