It isn't, it feels very alive. I just found out though, that the messages don't have to be recent, for example, just today I recieved a letter signed with the date 19/6/2025 that's almost three months ago! About the time you posted your comment
There seems to be some new messages every now and then =] but you'll always get a message when you're playing, as the paper boats will carry a random one from the last ~200 messages
Thank you for playing and contributing, it's nice to see people still enjoying this little game