Anyone noticing new projects still raising millions of dollars? Mohash and Dynamic for example, I think new projects will replace lots of top altcoins in coming years and my advice to young investors is to find new projects to mix with their portfolio, remember that Matic, Polkadot, Avalnache are once all new projects in 2018/2019..
Your advice is certainly understandable in terms of investing in what is new to the blockchain. But at the same time, as newcomers will look for these projects, because this requires analysis and understanding of what benefits the project will bring to the cryptocurrency industry. Everything that you mentioned has already been successfully used and developed further. You need something really new and useful to use, and then it will be a worthwhile investment.
If the newbies do not realize that they need to first understand blockchain and understand what crypto is all about, and learn from the mistakes of others that was done before they get in, before they start to make any investments, then they are going to be forced for a rude wake up call.
This doesn't mean that they can't get lucky, there are times during the bull market that plenty of newbies make stupid investments to shitty stuff and just because it is the bull market the prices go up and they make a profit. But that is not all the time and only during the bull market, which means that they will not have the second chance to do something like that again.