Yes. and let me explain why. She has been in the game for 7 years and counting and she has yet to slow down. Sure she'll reach her peak one day,but at least we know she has consistency. Yes bring in the "but she pushes album every year" but at least they have been consistent and kept her at the top.
And to even think she hasn't paved anything for the ones coming after her is just being in denial. I am not shading but the likes of Katy Perry,Ke$ha,Nicki Minaj to name a few have elements that Rihanna first brought in the table. Rihanna herself has elements from the likes of Beyonce,Madonna,Britney and more. So it has been a balanced situation.
And only hit singles? In this day and age pushing 6 million albums WW is no joke! Even TTT sold out so many hyped album by big names WW in mere 2 months.
Her fashion in general has been top-notch,so even there she is winning.
That being said,she has potential to gain far more. She also has much to learn.