Suchmoon brought it up earlier but it would be good to see what the original agreement actually stated.
I would not pay for such low quality work either.
My guess is probably nothing, but bounty managers probably promise miracles in order to get the job and when that doesn't happen, we get situations like this one.
I think that's more of a rule than exception when it comes to bounty campaign. Thing is, quality control is not in anyone's interest (sometimes maybe not even client's) because if it was, 90% of bounty hunters wouldn't be able to join any campaign and bounty managers are mostly interested in number of participants that they can show to their clients.
This will keep happening until bounty hunters start avoiding bounty campaigns with clear red flags such as inflated bounty pool. For example, Student Coin bounty pool is 1 million USD worth of tokens. How can anyone in their right mind think that some project willing to give such a huge amount of tokens can be legit or that will honor the deal? Just looking at the spreadsheet, some bounty hunters are supposed to get 400k+ tokens worth almost 9,000 USD (based on ICO price) for a crappy paraphrased or text spinned Medium article. Just ridiculous, but as they say common sense is not so common.