I do not think that anybody lost too much in this. JSEcoin was long dead, I used to check their volume and it hardly went more than $100 any day. There were only small trades, and about the buy walls, I think they were set up by team to give liquidity to coin, as it was in their announcement, some months ago.
The biggest losses in my opinion will be the websites that promoted annoying jse ads and lost users and credibility. Just to not even earn anything feom it in the end. Total waste of ad space.