The problem with the ninja-mined stake was that the witnesses reached a detente with Ned. And, unfortunately, it really should have been settled concretely.

The piece not shown in this post is that
if the witnesses didn't act quickly, there would be no way to effect the vote for witnesses by the users. So, if Mr. Tron had that voting power, he could vote in 20 new witnesses, and that would be that.

In other words Mr. Tron would have been a dictator at the click of a button.
The detente was clearly not transferred to Mr. Tron

The ends justify the means

The ends never justify the means.
As in, an old Buddhist saying, "the path to something, always contains the attributes of the something"

the path to happiness, always contains all the properties of happiness.

You can't do bad to do good.
(and defending yourself is not bad in this context)

which brings us to

The Minority Report.

As any precog knows, there isn't "one" future.
In fact, you could state, there are all futures.

(but, to understand that you need to understand what is relevant to the universe. And those are usually emotional possibilities to learn new things. That shtupid guy Schrodinger messed up his experiment by putting a cat into it. Now, the future possibilities are how does the cat feel about it, and how do all the scientists feel about the cat dying. The future is the matrix of those. The 50/50 garbage can be safely ignored)

So, you might say, any person might commit a crime or not.
But this is not usually correct. What is more appropriate is, the person will commit a crime, but will it be crime A or crime B.

And, if you want to stop that crime, you need to find the person who will commit it and get them psychological help for the reasons that lead up to the crime. THEN! you need to find the victims and get them psychological help for the reasons that attract the crime.