Our level of aggressiveness or whimpiness is a choice, and there are ways to be aggressive without overdoing it, and surely the more aggressive we are, the more we run the risk of overdoing it in one way or another.. yet I doubt that being aggressive is a negative because we are able to tailor it to our own aspirations, and try to keep in mind if we might be pushing the boundaries too much in terms of starting to have negative consequences associated with our level of aggressiveness.
You are absolutely right, aggressiveness itself is a negative energy that brings in bad results, which can damage an individual lives.
Though aggressiveness is an emotion, which can be control by an individual if they don't want it to escalate, because if not control or balanced, it can affect in different areas of life like relationships, work etc.
Also, having self-regulation can help in adjusting their emotions or balancing to prevent any negative things that will be caused by aggression.
Firstly I doubt if aggressiveness is consider a negative energy, there’s a more proper word maybe if investing normal then not over aggressively a state where you invest within your financial status. It’s right to know that aggressive buying is not a bad idea rather it depends on our management as a result of buying using our discretionary income, when the whole concept of buying bitcoin aggressively is bad is when an investor can’t withstand such force and consistency that comes with it for a long period of time, definitely our backup funds ( emergency and reserve funds) should also be built to an extend either as a pillar in terms of protecting our holdings maybe when encountering any difficulties.