The word "influencer" is less of a traditional job description and more of a word that industries use for people who maintain social media fanbases, be that in the form of youtube subscribers, streaming followers, instagram viewers, twitter followers, etc.
Whether or not it's a "real job" is subjective. A person who is extremely, maximally obsessed with rigid employment roles might go as far as saying a freelance photographer or writer doesn't have a "real job," even though they make their living doing that work. In other words, some people might always insist that in order for something to be a "real job" you have to have a salaried or wage-paying position with a permanent employer.
Most people would not be this extreme, obviously.
In the middle, you have people who would say that many "established" freelance occupations, like writers or locksmiths or photojournalists or IT wizards or any number of other widely understood roles are indeed "real jobs" but newer things, like people making money on youtube or twitch or instagram or through voluntary subscription services like Patreon...these, they would label as "not real jobs" even if some people are making a good living with them.
Then there are people who agree that, if you're making a living doing something, it's a job, and if the money is legal tender and not monopoly money, then the job is as "real" as that money. I fall into this category.