That warning at the bottom is funny because the app is literally available on App Store, a place where it's supposedly considered as trusted source and you can't side load app unless you're in EU or other few countries.
They did not specify the extent of the potential damage, but since they requested that funds be moved to a new wallet, it implies the hacker has gained full access to the seed phrase.
Does the warning cover Binance app and all associated services?
It's iOS kernel exploitation that escaped apple's app sandbox, consider the self custody wallet to be unsafe but honestly, I doubt it can gain the full access to seed phrase as easily if the user didn't store their seed phrase on notes app or screenshot it.
The self custody wallet mobile app after all, encrypt its wallet data.
The malicious app is capable to silently copy the phone's keychain and notes, if that is really the case, seed phrase saved on the device in a cleartext should be considered stolen.