I often encounter beginners who think that cryptocurrencies, especially Bitcoin can generate significant profits quickly, but this isn't the case. They should understand that investing takes time, managing a portfolio to grow it, making gradual investment repayments, or using a Dollar Cost Averaging (DCA) strategy, so they can see the long-term benefits of their investment. By the way, portfolio management is the important one, especially for beginners, it is best to manage it with money that you can truly guarantee you can hold for the long term, so it is best to avoid using it altogether, and using discretionary income is also the same. Alternatively, you could allocate your fiat savings to Bitcoin, but I don't recommend investing in altcoins, as there are so many considerations and risks on it.
Majority of people who think they can make significant profit from crypto or bitcoin particularly are the set of people who were mislead by people that introduced them to cryptocurrency industry. These set of people were told that crypto is a quick money making scheme that double or triple their money if they invest. It's hard to change the mindset of these people from what they initially believed except few of them who went extra mile to do self research.
Since they assumed it's an avenue to make quick money, they know nothing about portfolio management, DCAing, security or funds management. They normally invest all they have with the hope of making double of it in a short period.
I agree with you, That's the target of many people coming to invest crypto, they're looking for this get rich quick scheme crypto projects, and that's why they usually end up losing their money in the hands of scam coins or honey pot projects. Most newbie investors are not interested in learning about this coins to understand how to go about doing investing their investment into Bitcoin or cryptos.