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sooner or later this type of investment will be abandoned by many people, signs such as a decrease in trust is evidence that the public has been aware of the fraud.
nothing is safe in this world, there will always be a fraud. experience is very valuable to learn to at least avoid or minimize the great risk of fraud.
The things that are being branded as frauds should not be the investment (crypto) itself, they are but mere tools, the ones we should be aware of are the people behind it. And that should be common knowledge. People forget that "people" have the ability to commit fraud, not the items presented--they're the ones who operate.
Just remember that If it's too good to be true then it is fraud

Then again how can one identify if it's good to be true? After all, there's an art for mischief.