A major point not discussed.
It is not smart to play cop.
The fact that citizen’s arrest is legal under certain circumstances does not make it the smartest alternative.
This case is an outstanding example of how things can go wrong.
Even plainclothes cops will call for uniformed patrol cops when making an arrest. As a cop explained to me one very dark night, the uniform has an effect on people.
Some things you may do, but do not screw it up.
They screwed it up.