BTT was not an ICO, it's an IEO, and to prove, you can see it's rating here,
https://coincodex.com/ieo/bittorrent-token/That's just one of the site that gives rating.
You are right, too big focus is on exchanges, as they are supervising the project. We should still focus
on the project and the product itself and the exchange should be secondary,
Investors will decide on that matter. They will choose a platform or investment they will think they will profit.
but I can understand that in Bittrex or in Binance people have more confidence.
Of course, these exchanges has a good reputation, people will trust them over ICO who is run by people without proven good reputation.