You might be correct that the whitepaper of the project is plagiarised, but you might be wrong calling the manager of the project a scammer or the project a scam. You provided evidences of plagiarism instead of that of scam. To the best of my knowledge, plagiarism is not equal to scam. You can report the account for plagiarism(which I'm not sure whitepaper plagiarism is among the forum rules). If the evidences are compelling, the account could get banned.
Meanwhile, you lack tangible evidence that the project is a scam, this is because majority of the projects these days doesn't engage professionally whitepaper writers, they go about paraphrasing multiple whitepapers to come out with their own version of garbage.
So, you could reconsider, because I know how frustrating it is for a genuine project struggling to see the light being faced with scam accusations without proves.