It would be shade if no one had totally seen it coming. I mean, she's become more and more pop with each album. I wasn't expecting THIS much of a departure, but I'm not totally shocked. I feel like she's staying true to herself by doing this. It's clear she's changed (and grown) since her debut. Plus, she needed to make a song like this lyrically.
Grow seems pretty inaccurate tho, that would imply maturity & better quality music.... almost everything she does is the same only thing that changed is she went full on pop. If anything they complimented her.