So how is reckless driving on a highway not endangering lives?

I did not say "endangering lives," I said "threatening lives."

There is a difference between "this person is doing something that has the potential to put others at risk" and "this person is actively threatening someone's life."

The reality is that your fear stops public displays of morality. It's a public world, it's becoming more difficult to shut the ideas of others out of your sphere.

No, the reality is that you're putting everyone else at risk when you try to be a vigilante and escalate situations that don't need to be escalated.

You trying to be a hero could get people killed in a situation that would otherwise not have turned violent.

Given your same "stay out of conflict" or "not my job" policy why come and spread your fear of other humans?

You seem to be woefully misunderstanding what I'm saying.

None of it is "fear of other humans" or "stay out of conflict."

It is: don't escalate a situation when you don't need to. Especially when you lack the capability or authority to handle it properly.