Why it is a huge relief that the landmine incident received intense media scrutiny

Not only did they refuse the UN Command's rapid joint investigation immediately after the incident occurred,
but they also refused to share the footage and data requested by the UNC at the time of the incident, and strictly blocked requests for interviews with the wounded soldiers.
The Ministry of National Defense and the government blatantly revealed their intention to predetermine the results and tailor the investigation to fit them.
However, just as it became impossible to hold out—due to massive media coverage and political involvement—the UNC investigation was finally authorized.
This is a truly significant point... The government and the Ministry of National Defense had the audacity to drag things out by making nonsensical claims about "preliminary maintenance," hoping that rain would wash away the evidence...
But in the end, it didn't rain, and two additional North Korean landmines were discovered.
If they had proceeded as originally planned—with only the Ministry of National Defense conducting the investigation and making a unilateral announcement—would they have disclosed the discovery of the additional North Korean landmines?
If that were the case, they would have accepted the UNC's request to share data from the very beginning.