Not trying to sound condescending about age here, but perhaps that person is very young and is just following the hair-brained schemes of the internet -- "post and promote yourself everywhere! do it all the time! do it for likes and follows! post post post! you'll get where you want to be if you posttttt!"
I try to be understanding of that, but it doesn't make it less bothersome.
Why don't they just pick 5 max, and chill?
But also possible bot behavior??? Definitely needs a mod taking action. I feel like that's illegal forum behavior. lol