I feel like Weeknd's R&B has really taken a hit from a songwriting perspective.
I agree with dude's sentiment about Weeknd's vulgarity, but that's been there since day 1. Never was an issue. The issue, is that it used to be tasteful, and woven into a well written song.
But now, It's as if the Ratchet R&B wave has touched him and his subject matter and writing isn't nearly as poignant as it used to be. It's as if his content mirrors the Algust Asina's, TY$'s, TeeFLii's, and PND's type of R&B that they do.
His music used to be so much more sophisticated than his past few releases and features have been. Hopefully on the next project his songwriting returns to form.