Some people have a need to create chaos. They function at their optimal levels (they think) when in flux. The problem here is that by being in flux all the time, they force others they encounter to experience their dramas with them. It’s like an ongoing play with no intermissions.
Steering clear or responding in kind aren’t viable options for their victims.
Their need for chaos is written into their DNA. Their perception of its value is not. All flaws can be corrected to some degree.
Calm is not an operative word nor a useful process for them. It sounds too much and feels too much like control. It enrages them.
So let it go.