I don't know if I would call them a crack ship (since they are fairly well acquainted with each other and interact multiple times in the show. I generally define a crack ship as one where the characters have either never interacted or have only barely done so) but I do agree. I saw a bunch of Sterek fans talking about how ~canon~ and ~obvious~ the pairing was in the show and the whole time I watched it I was like "lol wut? When does the Sterek start? Is it the next episode...or the next?". And they barely even interacted meaningfully at all during 3B except in the very last scene. Hell, Derek had way more slash potential with Chris Argent in that season (which I do ship now btw. I ship it hard).