Yep.
I predict that, since LEGO Worlds doesn't use licensed IPs, it'll stick around on virtual stores/platforms for quite a while (instead of being pulled down due to license expiration, like LOTR and The Hobbit).
From what I can tell, LEGO Worlds doesn't have servers for Multiplayer. I tried MP once and, if I recall correctly, it uses a Host/Join system which means one player hosts the server on their computer/network and thus the game doesn't need to connect to a central server (at least, I think that's how it works in the Steam/PC version, but I don't know if the console versions use the same system).
So yeah, hopefully MP functionality will remain intact (at least on PC).
It'll probably take a while for modding to pick up, but I'm excited to see what people can make once the files are cracked/editable.