The Dr1 was also a touchy a/c to fly, also having the rotary torque, and was not for the inexperienced. Both it and the Camel were "hands on" for the entire flight, and both were wickedly manueverable in right hand turns. Many WW1 a/c had unforgiving characteristics and stalls. N00b pilots died at alarming rates in many types to all kinds of causes, enemy bullets being but one. Pilot training was also not what it would be 20 yrs later, that coupled with types that were accepted for production with limited testing, compared to say WW2, led to a lot of incidents.
All that being said, by mid 1916, it was total war, and countries were in a huge rush to get new combat planes and pilots to fill out their air forces. Losing a percentage to that kind of needed haste was just considered the cost of war. They just didn't have the luxury or time to make the process safer, nor was the culture to do so there at the time.
Compare that to today, a fighter student who fails to propery "shut down" after coming to a stop and misses a single switch, gets brought up before a review by the instructor and gets a new one torn out. Safety is taught as the golden rule, and mistakes, even minor ones, are just not tolerated. In WW1 if you CAME BACK, you were a success story.