Putting a screenshot of someone's face and the words "Abuse Alert" next to it with a warning sign doesn't match the content of your post which, if I understood correctly, is about investigating the matter. (I.e. an investigation doesn't start with the presupposition that the person has done something wrong.)
What do you think of the idea to have a requirement coming from the community along the lines of: the creator of each funded proposal should be providing weekly updates. If the creator fails to provide a weekly update, then someone from the community can start a post and the community can investigate what's going on. Each member of the community can then decide whether to keep voting or unvote.
In this way we have a weekly feedback cycle for each proposal. Ideally, the creator of the proposal would post weekly updates and get feedback from the community on each update. But if there is no update from the creator, then the community starts its own posts and does its own investigations and - I imagine if there's no input from the creator - the proposal will quickly lose support.
What do you think?