It seems crazy to me why anyone would store such large amount of assets in a password manager
that is widely known to have serious security issues. Do people not read the news?
LassPass is not a wallet so no assets were kept their. They victims stored their seed phrase and private keys on the password manager which was compromised when LassPass got hacked.
I'm on an iphone and do you have any app suggestions for iOS devices since I don't see KeePassXC for iOS or Android?
I just went through KeePassXC website and it's not supported on mobile. KeePass, Padloc and Passbolt are open sourced password managers that are available on mobile versions. You can use them to save your passwords but I wouldn't advise you to save your seed phrase or private keys on them. For maximum security, anything seed phrase or private keys should be kept offline.