We also cannot force them not to invest in shitcoins because each person decides to choose their investment. If they are still comfortable investing in altcoins, they will continue to do so even though it will be difficult for them to choose the altcoin because there are many altcoins on the market.
Before investing in Bitcoin
Buy Dip,& Waiting For Bullrun.
Before you invest in bitcoin there are some things you need to know so that it will enable you to hold your bitcoin for the long term, such as understanding that bitcoin is not a quickly get-rich scheme, so that you will not panic to sell your bitcoin because you did not see profit in a short term, having a source of income that will take care of your daily needs, and also understanding the volatile part of bitcoin so that you will not sell your Bitcoin at a lose because there is a little fluctuation
Investing in Bitcoin is risk-free, but investing in other altcoins does involve risk. Shitcoins are hyped in the market and once dumped from that market, there is no chance of going back. But once invested in Bitcoin, there is a good chance that Bitcoin will go back to the previous market even after the market dumping.
I disagree with you on what you said about altcoins and shitcoins. Both altcoins and shitcoins are risky to invest in because they are based on hype just to make you invest in them, and they can not deliver what they promised. For instance, during altcoins presale, they will promise that they will list at $0.1, but when they finish their presale, they will list below the listing price they told their investors, or they will say the market will decide the price, after taking investors' money.