Either you didn't understand the design, or this is not genuine criticism.
Every server that user connects to of course knows IP address of the user, be it Tor relay, VPN provider, Nym node, or SimpleX relay - the user chooses which server to trust.
Neither of the approaches guarantees transport anonymity.
Every server that user connects to of course knows IP address of the user, be it Tor relay, VPN provider, Nym node, or SimpleX relay - the user chooses which server to trust.
Neither of the approaches guarantees transport anonymity.
Recently added private message routing protects IP addresses of the users from the destination servers: https://simplex.chat/blog/20240604-simplex-chat-v5.8-private... , which was #1 point of criticism that IP addresses are not protected by default.