Ariana Grande accused of using "blaccent" on social media

A clip from Ariana Grande's interview with Billboard is going viral on social media, with users taking notice of Ariana's "blaccent", specifically in the clip above where she exaggerates her pronunciation of certain words.

Another user posted a comparison between the way Ariana used to talk, compared to the accent she recently has been putting on:

Source, Source

Thoughts, ONTD? Are they reaching again or is this a valid criticism?