Haven't had that (I actually had to google Drake, never heard of him). It probably depends on how you use the service, I never use the front page or top charts functions.
He was placed on the cover of every album for the front page, top charts, and a hell of a lot of other playlists as well [1], including playlists that didn't feature him (half of playlists, according to Reddit detectives).
It was so bad, that Spotify was issuing refunds [0], because they basically had one artist take over the whole site.
As my anecdotal example of the insanity of the promo, I had Drake featured in playlists for Symphonic Metal. From Nightwish to Drake... Is a hell of a transition.
