If that were the case, then you can't really trust conscripted
medics either at the medical center who can also mix up
medicines.
While I'm a front-line combat medic who goes into battle in times
of war, I've also worked behind the scenes in my medical center
(yes, I've dispensed medications before countless times).... as
well as did attachments with SCDF ambulances and public
hospitals.
The truth is that conscripted nurses can never expect to have the
same level of skills as professional nurses. However, to me, some
acceptable level of skills is better than no skills at all. Sure, a
conscripted nurse might take several attempts to successfully draw
a blood sample from a patient (to use as an example). The end
result, though, is that we get to free up the professional nurses
for the more urgent and serious casualties.
If anything, the peacetime effects will be favourable as well.
Having a large pool of trained first-aiders can be useful in case
of domestic emergencies, such as people having heart attacks at
home, or a kid with a broken leg.