OP, if we were to take your suggestion to its logical conclusion then we would ban everything that posed even the slightest danger.
Should we ban planes just because some have crashed?
Should we ban busses just because some of them have crashed and killed or injured people?
Should we ban dogs because some of them have killed people?
Should we ban cars because some have killed or injured people?
A speeding motorist in a fiesta could have done just as much damage as that 4x4.
A new brand new environmentally friendly, vegan friendly, just stop oil endorsed EV, like a Tesla, can weigh in excess of 2 tons, and would have ploughed through that fence in the same manner as that 4x4. It's not the physical dimensions of the vehicle which caused those tragic injuries and deaths, it was the kinetic energy of the mass of the vehicle, moving at speed.
I understand your angry, but the 4x4 didn't cause that crash, the driver did. And a regular EV, which would be seen as acceptable to you, would weigh just as much, if not more that that 4x4.