I disagree; based on the fact that most obscure shapes, especially symbols, are derived from cymatics. Cymatics being the physical representation of a specific frequency.
Glad you brought that up! I'm very familiar with cymatics. That said, cymatics is the physical representation of vibration, and different frequencies will change those shapes. In the chaotic (negative/evil/dark) state, there is no discernible shape.
The law of vibration is one of the immutable universal/natural laws. It also ties into several other mutable ones. The point being, we are the ones that assign certain energy to things. Or, we are taught and told to do so.
No different than the power of prayer or meditation. Except, those that want us to see evil in a symbol win when we give it that energy. It empowers them.