我自己的感受，军队对士兵的安全非常用心，各种措施，包括精确的气温监控，阳光树荫，各种降温措施，体温汇报，防脱水，伙伴互相照顾系统等等，层层保护，保证最大限度减少意外。
虽然我没有数据，但是我感觉，坡县当兵出事的概率（事故率/万人）应该低于类似年龄段的男生上大学出事的概率。
不能因噎废食。

对比 大家熟悉的NUS，和SAF
NUS 有学生总数约3万 ( http://www.nus.edu.sg/registrar/statistics.html )
SAF有人 7万多（ https://en.wikipedia.org/wiki/Singapore_Armed_Forces）

Google search "singapore nus student death", 第一页有5个不同案例造成的新闻报导，初步看来都是18年
https://www.google.com.sg/search?rlz=1C1NHXL_enSG696SG767&ei=7wLgW9-CJ8vivASarZDoAg&q=singapore+nus+student+death&oq=singapore+nus+student+death&gs_l=psy-ab.3...672914.673559.0.674171.4.4.0.0.0.0.102.275.3j1.4.0....0...1c.1.64.psy-ab..0.1.100...35i39k1j0i8i30k1.0.99C6CAMePN8

NUS student died trying to get back into her seventh-storey room ... 5月
Car accident in Iceland: Singaporean who died an NUS medical ...4月
NUS bio student dies after playing computer games overnight, Health ...时间不明
NUS student killed in Clementi accident had written profound . 4月
Duke-NUS doctorate student found dead in lab at Biopolis - Channel ...1月

SAF的记录 18年3例
https://en.wikipedia.org/wiki/List_of_Singapore_NSmen_who_died_in_training

30 April 2018 - Corporal First Class (CFC) Lee Han Xuan Dave, 19, a Guardsman from the 1st Battalion Singapore Guards, was found to display signs of heat injury at about 0835hrs on 18 Apr 2018 after he had just completed an 8km fast march at Bedok Camp. Lee was evacuated to the camp's medical centre and subsequently transferred to Changi General Hospital, where he was warded in the Intensive Care Unit. Lee's condition worsened during the hospitalisation and he was pronounced dead at 1732hrs on 30 Apr 2018.[13] The Singapore Police Force will be charging an officer in criminal court for causing CFC Dave's death by a rash act, under Section 304A(a) of the Penal Code, and referred six other SAF servicemen to MINDEF for investigations for potential breaches of military law. [14][15]
13 May 2018 - Corporal (CPL) Kok Yuen Chin, a Singapore Civil Defence Force (SCDF) Full-Time National Serviceman from Tuas View Fire Station, was found unconscious at the bottom of the fire station’s pump well. CPL Kok had been celebrating his impending ORD with his squad mates, and one of the activities involved throwing him into the pump well. CPL Kok did not resurface. CPL Kok was eventually pulled out from the well after the water had been drained. CPL Kok was then conveyed by ambulance to Ng Teng Fong General Hospital. CPL Kok was pronounced dead at the hospital.[16][17] An SCDF officer was jailed for causing CPL Kok's death by instigating the ORD ritual and for abetting the obstruction of justice by asking for footage of the incident to be deleted from a colleague's phone. Four other officers have also been charged over CPL Kok's death.[1]
3 November 2018 - PTE Liu Kai, 22, a transport operator from the SAF’s Transport Hub West, was killed when a Bionix vehicle reversed into his Land Rover during a training exercise at Jalan Murai. Following the incident, it was reported that the army declared an army-wide safety timeout on training to ensure that all appropriate safety measures were in place. It was also reported that PTE Liu Kai would be posthumously accorded with the rank of Corporal First Class (CFC) [18]

至少单看18年，NUS记录5/3万，大于SAF的3/7万。

理论上讲，全部十八九岁男孩都得服役，那就意味着队伍里
有体弱多病的，有身体极度强壮的，
有头脑不太灵光的，有头脑非常好使的
有违法记录的，
再加上十八九岁青春期，这群人就是放在图书馆，咖啡店他们都能印出来不定啥事故，基本上啥事都能发生。
最后看报道，实际发生的事故不多，军队对这些人的安全管理，还是相当不错。

读了这么多年书，就事论事，很难吗？