Files downloaded from these stores are not vetted and can contain "ripping" scripts that may compromise your own VRChat account or computer.
The platform is widely condemned by creators for enabling the theft of private and public avatars. Users have reported that providing information to "copyright" or "DMCA" links on such sites is often a trap to harvest user data. How to Stay Safe ripperstore invite link
It allows users to download and share Unity-based assets that have been extracted (or "ripped") from game files without the original creator's consent. Files downloaded from these stores are not vetted