However just because those influencers talked about a coin doesn't mean you have to buy it, just research it and you will see how great or terrible it is. That's my trick, I check what influencers say and then pick something among them, I still do my research on all of them.
The influence of famous people is only as a support to increase the reputation of their project, but not all influencers are involved in the coin because there is a deal but because the interesting and unique concept can attract influencers to participate in the project.