These type of questions do not really matter all that much. Why? Because it doesn't matter what type of investment it is, is it a token, is it a coin, is it yield farming, is it nft, is it staking? None of those matter at all, they are totally useless and worthless when you look at just "how" part of it. What matters is how good the project itself is, because if it is good, then it is good in any possible way, if it is bad then ti is bad in any method. Ther are good staking defi projects with its own stablecoin, there are bad ones, its not going to be good or bad just because of its own stablecoin, that alone doesn't give us any hint at all.
That is right, no matter what kind of investments you will venture into, you always need to do your own due diligence.
It doesn't matter if the DeFi platform has their own stable coin, the question is, how well do you know the project itself?
From my observation, it is indeed difficult to trust any DeFi platform particularly the new ones.
I was interested before also in staking some of the DeFi tokens before, but decided to sell off and not go with this investment route again.
You are always worried if when you wake up it is still trading in the market or it has still value, so don't want to go thru such stress.