Many ALTS have NO value: Maybe the market will correct to this fact of life.
As an example Tron was built on hype and has a huge marketcap: I am using this as an example regarding hype and overpriced!
You hit right, some are just a duplicate of other past projects,
so if you are newbie here you will notice this, but if you are an old investor or bounty hunter you will notice that some are just creating a project that is not attainable at all, too good to be true so it's important to know who are the team behind those token/coin.
I think you meant to say the opposite!
As with every good invention, the-never-do-wells, would always want to zero in to do what they do best and there is not way to totally stop or prevent them, but any serious minded person should be able to carry out extensive research on a project they plan committing their money and not to swallow all the bogus claims hooks and sinkers. It goes without saying that the motive behind a good number of projects is to scam and often the huge figures claimed in pre-sales are carrots, sticks and donkeys.