Copying from my comment below for context:
Job openings like these are messing things up for creatives who specialize in one area.
Now everyone looks for video editors who do audio. No more jobs for sound guys.
If you do graphic design, you are now expected to do animation and web design as well. Some even want you to do social media and video.
People who post things like these only want to save a buck. Heck that's why they outsource the jobs in say the Philippines and India. They don't want to pay their local rates.
And some Asian folks like this too because the going rate is higher than local rate here.
But it's literally ruining the livelihood of people in other fields.
I dont really get the joke
I think they're saying that each of those are different professions, which is why the job posting is made by a clown. That being said, there are 15 year olds with TikTok accounts who do all of these things, so it also sounds like someone who doesn't know what a Social Media Manager does and criticizing the job posting.
Yea, replyer is most likely in advertising or marketing and where there is a job market for that, and is only seeing the world through their own eyes.