There are 2 ways to die in a HO:
1. from your opponents bullets
2. from your opponoents plane itself
If you eliminate 2.) you make dieing in HO less likely or better, increase it's survivability, which results in even more people using it.
Midair collisions are something real. One big reason for friendly collisions off, is the problem you would have with spawning. (I saw whole squads die on spawnpoints in events, because the CM forgot to turn off friendly collisions.
What if you decide to pull up or out and he decides to do the same and the lag decides that you are still the one to see it and you die and he gets the kill? I have had this happen on several occasions.
It is impossible to know what anybody else sees on his FE other than yours. Therefor it's wrong to say, that someone can force you to a collision. It is always on yourself to dodge.
If you accept this and don't think about what other people see (which is impossible to determine), you won't get any headaches.