One part commonly overlooked is "see and avoid". That is, under VFR, a pilot should look out the window and avoid hitting other things. Which, strange as it sounds, has been a sticking point for some drone flight approvals.
The bigger issue is that drone pilots have no skin in the game. If they cause an mid air collision resulting in fatalities: opsie daisy!
for everyone else the result is usually a lot of sobbing.
that doesn't mean they're not blase about taking risks ahead of time. but that's more because they misevaluate the risk, and can't clearly imagine the negative outcomes.