Yes, the actual threshold when the observer hasn’t opted out of community ID is lower than (but not including) family, see here.
So the full list of what can be made RG by checking that box is:
subfamily
supertribe
tribe
subtribe
genus
genushybrid
subgenus
section
subsection
complex
The threshold when the observer has opted out of community ID is defined in a different spot and specifies only genus (i.e. not subfamily, supertribe, etc.). I don’t know why it’s done that way, but it’s already been reported.
Edit: this was fixed and now observations at these ranks should be able to convert to RG regardless of whether the observer opted out of CID.