1. Language "should" be matching the save file, unless it was moved directly from HOME after previously residing with the exactly same OT but with a different language. It is marked as Fishy because it is a less-than-likely situation, for manual inspection.
2. Bulk checks are to raise things to your attention, and are not definitive. As you've noted, some events have fixed PID/EC values, but these are not granted as exclusions by the program as it is not implemented as such.