It did not reboot reality. But it did hard-lock the PLC, forcing a manual hard reset of the entire Rack 7.
If you are one of the three other people using this tool, here is the hotfix until the official patch drops. diagnostic tool v1.016b
INTERNAL / EVALUATION ONLY PROJECT: Diagnostic Tool v1.016b DATE: October 26, 2023 PREPARED BY: Systems Engineering & QA Division It did not reboot reality