The scamming will continue for as long as there will be naive newbies who believe that they can invest in "good project", and it seems there's still plenty of such people. Nowadays most people know about the dangers of shitcoins, ICO scams, pump and dump and so on, but somehow they believe that they posses the skills to avoid it. and this is where they are wrong. My advice is just stick to Bitcoin, it can't be manipulated in the long run and it's the least risky coin in this whole market.
In my opinion people also can stick to top 10 altcoins which also have a really good background and allow people to also save money in this manner. And probably will have a higher chance to increase the $ income because of the higher chance to grow up if main bitcoin will grow up
What you have specified is right, in the same way, there will be huge market fluctuation what was happening today. There is no guarantee we will be in safe hands even though we purchase top 10 coins in the market, but in the long term, we might get huge if we don't get panic when the market is in a downtrend.