...Decentralized applications are run from source code running on the blockchain network so these applications are not controlled by any individual or organization.
The "decentralized" in Dapps is quite misleading. You could interact with these applications without the need of a middle man but I wouldn't go as far as saying nobody can control them. I am pretty sure you've read about hacked DeFi platforms freezing activities like farming and staking pools.
Yeah, I see what you mean. We are assuming that since Dapp is decentralized it can not be intruded or hacked but no the reality is so different based on many instances we already seen and even experienced for the past years. Well, this can be categorized under the "you can't have your cake and eat it too" thing. Anyway, am still hoping that there comes a time when we can really witness Ethereum and even Bitcoin for that matter fulfill their full potential.