Saying 'fast-paced' usually (in my experience) is a claim that the team doesn't get hung up and blocked on a bunch of minute details and 'sign-offs'. In other words - there's no committee.
Even if that isn't the norm, putting so much stock in the copy in a job ad is probably a waste of time anyway. Just because the ad says 'fast-paced' or refers to the person they're looking for as a 'ninja' doesn't mean it wouldn't be an awesome place to work -- from my perspective, quite the opposite, any text like that makes it feel like it was written by a company without an HR department (+10!).
I've written a few job ads and I'm sure I've said fast-paced and other filler words.
I wish I meant "When reality and the plan don't match, we change the plan," in reality it was "Hmm, this text needs to look longer -- I'll use adjectives!"
Even if that isn't the norm, putting so much stock in the copy in a job ad is probably a waste of time anyway. Just because the ad says 'fast-paced' or refers to the person they're looking for as a 'ninja' doesn't mean it wouldn't be an awesome place to work -- from my perspective, quite the opposite, any text like that makes it feel like it was written by a company without an HR department (+10!).