Load of shit warning at hand.
Let's get one thing straight before we even start- "influencers" are generelly interested in a specific topic or two. Once an influencer, not always an influencer. That's how it goes. It is impossible to be an apparent expert in everything, unless of course you happen to be an arrogant, obnoxious dick who is under the impression they they know everything.
It is also important to note, that people who have different interest sets, also have different sweet spots in their connection points. I've seen first hand that the same campaign for a social media influencer set needs to be tweaked and adapted for a politico set. This is very important and you should always remember that one when planning a campaign.
Furthermore, people, who are by nature interested in a certain niche topic, will pursue that topic incessantly. It would be intuitive and wise to think that would involve established sources for particular interests. Fashion is best suited to magazine, health to journals and greenie most probably to the newspaper.
So take this with a grain of salt, because it's not all that upfront and I don't think they really understand the implications of what they're saying.