I think this will just come down to an unfortunate set of circumstance where things were running too close to the wind to begin with. It all ended up with some additional factor that sealed the deal into an unlucky scenario where everything lined up the wrong way after too little margin was afforded. As said earlier, when doing these sort of things think not only if the maneuver itself is safe, but what happens if things don't go as planned, what's the safest out and so on. Remembering that both take-off and go-round situations are high workload and offer little chance of high energy turns to avoid things without bringing the safety of the aircraft into question. You also do not have enough time to 'arrange' a suitable de-conflict when things are so close, so you have to assume a lot about what the other players will do. Once you have a third party appear it will quickly draw your attention and then re-sighting the original conflict may be very difficult with background clutter.
A lot of things to think about, and, if thought about before the fact you will probably think it better to wait until everything is less complicated.
That being said, if you can come up with a way to stop these actions, prevent VFR into IMC, stop bravado acts close to the ground, well then move on and try to stop all the unnecessary accidents on the road. Your advice will be worth millions of dollars. But when most of these accidents come down to all participants thinking they had it all under control 'until', well there's not much you can do except educate on the dangers. Legislation, rules and such won't do anything to help. In reality you can not educate everyone on all possible situations in life, it takes some onus on the user to look beyond the minimal and take some responsibility for their actions.