Well, I can't totally discount that even if I'm not personally reading the manga because I've been reading here the comments all the time (not manga discussion but the comments telling the anime pacing is from hell). So, I can't say it wouldn't affect me, but honestly I've already seen enough anime in general to judge what is good pacing and what is bad. But saying this, for people with less experience in anime in general Shippuuden's story telling might be just fine and exciting. In a sense such people can be considered very lucky.