I don't think that people who post single, unoriginal photos, with zero additional context are adding value to the community. However, as a "social network", there will always be these type of posts (hopefully they won't constantly be begging for upvotes and follows).
I don't mind the instagram-esque posts, and sharing of funny gifs / memes is fine to me as well. I dislike the accounts where their photos are basically plagiarism / copyright infringement .. but they still get tons of upvotes and follows :(