I know these projects you are talking about. They really are nothing new. All this has already happened. Wallets and a DeFi app. Only time will tell the relevance of the project for users. So to promote the project or not is your personal choice.
All final decisions really depend on each individual because everyone always makes research for the project he just saw in order to find out how the project concept is and where the promotion of the project is going. All of this is to not easily get caught up in a new project or a project with a big lure, but never a real proof for their product in the market.