Not you calling Hips Don't Lie and Deja Vu dance hall

either way no, Beyoncé did it first with Baby Boy
Madonna made dance mainstream first, then Britney came with Blackout, so, no.
As you said it yourself, EDM was in it's best moment when Rihanna released We Found Love, not trendsetter at all. Same for the ballads, Adele and Lana released their albums before Unapologetic.
Rihanna is always late, she's a trendfollower.