No, but the reverse is true: if it's a scam, you lose money.

So let's talk about investment. Investment is placing money in enterprises that promise future increase. Increase can come in the form of dividends, interest, or growth. The last is the most problematic in the case of crypto. Because crypto produces nothing and has no intrinsic value, but the price grows as it sucks in liquidity. Unfortunately, these characteristics also attach to things like gold, banks and paper currency, so it's very hard to distinguish crypto from a Ponzi. I think the one differentiator is that the only thing produced by a Ponzi is volume. Which is also not helpful, because technical analysis is driven by price and volume. So it's completely reasonable to use classical technical analysis to explain crypto price movements and make pretend that they're investments. The only way to be sure if something is is a Ponzi may be to hold it until it dies. Even then, if there's enough interest in the corpse, it could develop into something akin to gold: a useless trinket that endlessly attracts new dreamers. LUNC still has interest, even after Terra's epic meltdown.

Another problem is that you can hang whatever crap you want off a blockchain. After all the cartoon apes and idiotic digicoins disappear into history, this terrible technology will still find new uses. Some of them may actually have value, which will only make it harder to suss out the frauds. Until the last fool capitulates, you can't call it a fraud.