Agreed, Professional traders are more concerned with their personal trades, and spend time, developing the most effective tactics and ensuring optimal gains. It is this which often makes them not to be interested in activities such as signal sharing or teaching.
Most so called "professional traders" that do this are those who needs more users to the same thing for their benefits only. This includes the dumping and pumping coin indirectly by creating so called signals.
Exactly, Perhaps we should be more cautious and picky in reacting to signals that are distributed en masse by some actors. Learning the fundamentals of the market analysis will allow transitioning to more autonomous actions and steering clear of patterns that are designed exclusively for a one-sided advantageous outcome.
To promote a positive value for the society, everyone must share knowledge and give honest information not causing negative manipulation. In education ,support from each other ,we should be able to for stability and trust in this ecosystem.