Not really, and I’m guessing it’s part of their decision here since it could open them to possibilities they don’t like if they say that an account is an asset. It’s also probably fairly complicated, legally; they need to understand how estates are settled in every country they do business, open themselves up more to scammers, etc.

I doubt they’re going to enforce this if you were to give your credentials to someone else. They’re just not going to voluntarily provide the credentials for you.