What do you mean by pump and dump most of the project still running based on speculation and News . Even being in traditional equity security trader it was common . Pumps and dumps happen for sure . we cant control in any trading platform . But in crypto space its bit more because its still new . We can restrict for some far by removing chat bot in trading platform.
The market is still new and makes the caps is not like other trading which has cap more in trillion dollars. So the cap of crypto is around 250M dollars so far and it was decreasing since last year was about 800M. If the marke cap increase and also the volume, trader community will not easy to pump and dump crypto.