I would really not call the loopop guy (whoever he is) an "influencer."
I'd call him an educator, taking advantage of the medium to give super useful, very thorough reviews of products that are both expensive and notoriously hard to figure out.
Plus I guess he loves synths enough to do all these deep-dives? I mean, if it were a job it would be a pretty grueling one, that stuff is complicated to learn and there are so many and the expectation is that his videos will cover pretty much everything. I assume he makes some money on it but I'm actually relieved to hear it's not his main gig.
"YouTube is underrated."