The ICC has never prosecuted a Dutch citizen (or anyone, for that matter) over war crimes committed during the Bosnian War. The events of Dutchbat happened in 1995, 3 years before the Rome Statue (the treaty that established the ICC) was accepted. The ICC has no retroactive jurisdiction as per the Rome Statue (Article 11(1)) [1]:
The Court has jurisdiction only with respect to crimes committed after the entry into force of this Statute.
The ICTY was established by the United Nations to prosecute crimes committed during the wars in Yugoslavia, but as the ICTY only focused on carried out atrocities (instead of failure to defend an area), no Dutchbat members were prosecuted there either. The ICTY did prosecute Krstić, the commander who led the Srebrenica massacre that Dutchbat failed to defend against.There were some civil cases against Dutchbat, the Dutch state and the United Nations. Dutch courts held the state responsible to some degree in all cases.
Unsurprisingly, the rest of your story is also false. There are no credible reports of the Dutch government threatening anyone to drop cases related to Dutchbat. Some Dutchbat officers were awarded military honors, but they were not knighted, nor did their pay increase as a result of their actions in Srebrenica. The ICC moved to a new building in 2016, this was again not a result of anything that happened in Yugoslavia.
[1] https://www.icc-cpi.int/sites/default/files/2024-05/Rome-Sta...