Yeah, and people would've complained that Moffat is forcing the arc into every story like they did with The Crack.
True enough, but I think a valuable lesson RTD learned after Bad Wolf - where it made sense - was that the arc needn't be everywhere. Saxon is only in the earth-based episodes. Torchwood similarly doesn't appear everywhere. Both get important drops in Tooth and Claw and Lazarus experiment, and then vague updates in 42 and Love & Monsters (lol) as well as brief mentions in other episodes, but generally they're otherwise largely absent from the series. Series 4's arc was even more loosely framed.
The crack was back to Bad Wolf stuff, but like that it did sort of make sense; the crack is 'everywhere' and all that. I don't think it was ever quite explained why it appears where it does, though. Is it everywhere? Is it following the Doctor? With Bad Wolf it is obvious that Rose littered it across their path deliberately, as a message to herself - so it makes sense that it is everywhere, even in the Ninth Doctor/Rose novels. The logic of how the crack gets to where it ends up is never really explained, which is part of what aggravates people, I think.
It was also less subtle, I suppose. Stuff like "Zoom through the TARDIS lock and OMG THERE'S A CRACK" and "Wide shot of the space ship, zoom in OMG A CRACK" really feels like a hamfisted way to force the crack into Vampires of Venice by comparison to a throwaway line "How's things going at Torchwood, mate?" (Rise of the Cybermen) or Bad Wolf being written in German on the side of the bomb in The Empty Child.
The moments when the crack appeared and was important was great; they should've erased all those other bloody cracks and just kept it in The Eleventh Hour, Flesh and Stone and Cold Blood - Series 5 would've been better for it. The ending of Cold Blood is absolutely wonderful and brilliant arc stuff. That was great; really gave the whole arc some weight.