10% APY in stablecoins may seem like a good deal, but it's still a risk, because if we look at stablecoins like UST they are worthless because of greedy CEOs and scammers.
Be aware of the risks involved, make the most of them, and profit consistently.
But saying with 20% APY on Altcoin or token is quite risky, because indeed the price fluctuation will be very fast.
Maybe the token will continue to be obtained but the price that continues to decline will make the coin price worthless again.
There are many kinds of scams with large profits, but in the end, it will only hurt.
Be careful with promises that provide large profits.
Beefy.Finance only offers a vault of a new project but it is possible that it will be harmful or even a scam.
UST was a whole different story, but I understand your point; we haven't ruled out the possibility of another algorithmic stablecoin having a similar fate. However, a quick look at beefy.finance and you'll find up to 30% APY on stablecoins. Certainly, nothing is guaranteed, and some vaults are riskier than others, but I believe that 10% to 15% on average is achievable with a low to moderate level of risk. Apart from stablecoin vaults, you'll also find vaults with random, usually new tokens, with APYs as high as 2,000%; certainly, that's a whole different story, and the risk is much greater. Personally, I wouldn't take my chances on such coins unless you're up for a gamble.