It’s not that there isn’t a license, there is, but the license says there is no license, it’s public domain, do whatever you like. It’s not a problem if your license says that there is no license, but yes, it is a problem if you don’t have any license attached to your code. In those cases, yes, most distros don’t touch that code… or maybe point at the project, but do whatever you deem is right with it, we’re officially not touching it.