What is the problem with Decentraland?

Could you elaborate on some of the key issues surrounding Decentraland? Are there any scalability concerns given the nature of blockchain-based virtual worlds? What challenges does it face in terms of attracting and maintaining a user base? Additionally, how does it plan to address the issue of content moderation and ensure a safe environment for its users? Moreover, does it have any issues with interoperability, limiting its integration with other virtual worlds or platforms? Understanding these aspects would help in assessing the long-term sustainability and prospects of Decentraland.