It seems that there is currently no way for a creator running an in-game store for their world/group to prevent or ban users from paying to support. A well-known world within a specific community has the name of a known malicious person plastered on the supporters board, and all supporters are given vip access within the world. With no way to prevent this person from supporting the world, they are granted a status and access that no one wants them to have.

Running a store should be like running a group in this regard. Creators should have the option to prevent specific individuals from accessing their services and curate the community they desire. This is especially important when reporting someone does not result in their account being banned or when it is known that the individual in question has (and will continue to create) multiple alts. The community is much quicker in discovering these alts than VRC is at removing them. So please, let creators have control in preventing unwanted users from supporting them.