Project like this is somehow a common thing which it needs a lot of work just to fixed some of the details. It's hard to run a project especially at this moment wherein the market isn't in a better situation. So, reviews can be a vital thing because the content maybe have some helpful topic.
No, you are definitely wrong. The market is still in the stable situation as you can see in the coinmarketcap due to the recent pump on the Litecoin.
The market situation affects ICOs project that are collecting money from investors. PrimeXBT is a final product, they are looking for customers ( people who use the service, in other word, traders), whether the market is uptrend or downtrend, traders always trade. A stagnant market is indeed a perfect for trading platform that offer margin trading, because making profit with normal trading become hard and people start to look for an advanced strategies to make money.