Influencers often market things and make money off things other than being good at [name a skill or thing they are influencing]. For finance previous work has shown that financial influencers are are worse advice givers are actually the more popular ones.

Not necessarily... Depends on what they peddle, but could be just your motivational speaker, self-help or course grifter.

Studies have been done that show that. Of course, if it is an old study, results need to be run on new data.