It's probably because of the way they go about the advertising. It's so fake and forced.I guess but, literally all advertising is lol.
No. Its just a new profession. They get paid by advertisers and those with a big following have a lot of influence in that regard. I dont know why people whine about this lol. Its just a term to set them apart from your typical movie star or musician celebrity.
My nephew showed me a video of this YouTuber called Mr. Beast that hes obsessed with. While he does gets crazy and crazy amount of views when I think of the term influencer I picture a activist/philanthropist whose trying to make the world a better place.