I said it a couple of times and I'll say it again. Stop blaming exchanges for shitty coins. It's not their fault people invest in all kinds of shady coins before doing their research. Exchanges are just tools, providing us a convenient way to trade. They are not to blame.
When I sell xtc and people die because they didn't read. I was just a tool as dealer? I had nothing to do with it?
When I own a bar and sell 6 liter of beer to a customer. I was a just a tool as barman when my customer becomes involved in a car crash because he decided to drive home?
another stupid anology :
in this case you sold him a bad batch of been that made him sick and crash his car would be a better analogy. So technically you would be at fault even though in the eyes of the law he would be on his own : but as a customer he trusted you to at least verify that your beer was good.