I don't like the fact they're so adamant to convince us she can't sing tho because she's an amazing singer. There's some more "natural" tracks on the album who showcase some of it. They could have mentioned that her tone is perfect for all kind of effects.
It suits her more than anybody and it is a huge quality of her IMO.
Her catalogue is kaleidoscopic ! Also her timing is always genius.
EDIT: I take back what I said since I noticed they used degrees of probability. As if they were speaking for the average customers who do think Brit uses studio effects because can't sing while not being able to accept how balsy she is with her sound and the hell she is given for it
They let the listener decide if that "vocal" claim is true or not yet, at the same time, urging them to realize that she's VERY adventurous, sonically speaking.