Thread:SomebodyData/@comment-24503208-20180427160036/@comment-26971556-20180504154219

Alright.

The 2-A rating comes from Madoka stating she reality warped all universes, including those that were and those to be. Then Homura Tamura confirmed that there is infinite universes.

As for the nonexistence erasure (?, this is the first time I heard of it.), it's from being able to erase UKG I believe, who is stated to be non-existant.