[vbat99]

I don't think grammatical accuracy should matter here since an option is just an option for the user's preference.
But if you insist, you'd better change the wording of the option as it won't work for a half of the MPAA rated movies.

Might have lost me here. Suggestion on better wording? any suggestions?

Now I can guess why the certification filtering options are so limited (no distinction between G, PG, and PG-13). Probably to handle non-MPAA ratings all together? But I really miss the filtering functionality that would list G, PG, PG-13, R, and NC-17 movies separately.

Yes, this is difficult as different countries have different ratings, differences between ratings, and some ratings are so not right.
Maybe in the future it can be looked at.