LastPass has a tutorial video that shows you how to only use them for autofill: https://www.lastpass.com/features/autofill/iphone
Other password managers do, too: https://bitwarden.com/help/auto-fill-ios/#keyboard-autofill
Other password managers do, too: https://bitwarden.com/help/auto-fill-ios/#keyboard-autofill
From a user's perspective, if the implementation sucks, the standard sucks.
since the person I responded to couldn't find it, I linked tutorials. it amounts to opening the Settings app, going to "General" and then "AutoFill & Passwords", so it's also not terribly difficult to find compared to other iOS settings.
you could've at least tried to understand what's being talked about before blindly complaining.
LastPass is not a secure place to store your passwords. Bitwarden is the second worst place. Don't just take my word for it, do your own research.