You should reach about the project. You should check how many visitors at their website. For example, you can you similarweb. Also you should check how many participants at their telegram chat/channel.
These things I can fake alls haha. Make money online has many methods to make money and fake these things is not hard for those who worked on Youtube or SEO site. Telegram members can earn from bounty, traffic can buy from SEO services, the roadmap can lie by the devs 
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