Willow, ICAO is not the security council of the UN , it is a technical agency issuing standards and recommended practices, not sanctions. The words used in the Chicago convention are " foster planning " and "encouraging aircraft operations for peaceful purposes" not to pass judgement or apportioning blame . The FR /Belarus report goes as far as they can go.
It is up to individual States to take the court cases and the sanctions parts in case of major issues , like Netherlands does for MH 17 or Canada for the Air Ukraine , or in this FR case, Poland . .
The IFALPA/ECA press release was drafted just to prevent a repeat of those times where basically profit goes before caution in flight planning overflights of conflict zones. It was not related to FR/Belarus.