Yes this is crazy because anyone can join in with no knowledge of anything. Look at what happened with the palm beach "leak". people will jump into anything.
There are good and bad ICOs because more are coming out and its getting harder to pick them out. Just do you own research and don't rely on peoples opinions.
You can get back your coins because all the token addresses are all ethereum addresses, but the problem is getting the exchange to send it back to you or credit it correctly on your account.