People see the money making posts of the whales on the trending page. Those that have invested in the platform overtime.
They think they can do the same thing, but in days instead of months/years.
This leads to spam posts, follow/follow spam comments, plagiarized content, and people essentially begging.
Combine that with the speculative nature of crypto currencies where 1 SBD could be worth $4, $10, or $15 in some imagined future, and you have a recipe for abuse instead of use.