You made a lot of point, this are useful information that need to be keep as a reminder for all of us..i truly believe that most of ico fall in that 3 category and i think wide regulation in every ico project must be implemented and this is the right time were the cryptocurrency are on its peaks time.
Theres no doubt blockchain technology are great.but lot of start up right now are completely unrelated to blockchain industry, everything they build are there just to make money and no value at all.