You are spot on with this. Especially back in 2013 as bitcoin being the only name out there in terms of cryptocurrency. I tried to make a list here on my website probably around 2014-2015 in an attempt to make a list of scam coins. The work was overwhelming and I eventually gave up. Mind you I've purposely neglected to update the list, as I was literally wasting too much time on it. Now there's a wide variety of legit coins to choose from.