Bad actors are using newbie account to spread FUD, lies, and disinformation in certain forums.
Newbie account could be used to share FUD, lies, etc. on all boards/section, all it takes is bad actor's creativity.
One example of such forums is the speculation forums. As a newbie, they don't have enough knowledge or experience in crypto to speculate.
As they gain more experience in crypto and become full members of the bitcointalk forum, then let them speculate.
Doesn't mean they shouldn't be allowed to share their thoughts or experience. I'm sure more "senior" member wouldn't trust other's thoughts/experience easily.
Even legendary members make speculation without reasoning or logic these days.