I do not agree with you. Very often people do not check the development and the products of the project but they see the advertisement and promotion of the project.
Advertising always attracts attention, the more advertising, the more attention.
Cryptocurrency is becoming popular and many people are paying attention to cryptocurrency. But in order for people to know about the advantages of a particular cryptocurrency project, advertising is needed. And the bigger and more effective the advertising, the more people know about the benefits of a particular project.