I'm still trying to learn more but I will like to keep sharing what I know, newbies if FED can gain access to billions of assets through hacking cloud storage why do you still believe that storing your keys and phrases in email account and cloud storage is safe?
Storing that kind of important data only is not a good and smart idea. We know that everything online will have more risks.
You are right, it will be secured enough to save our private keys, phrases, and other important data offline. In offline itself, we must be also careful enough to ensure that other people will not know the data. We must also save them securely, not forgetting, and also difficult to reach by others. Not telling others about this important data is also important because none may be trusted 100%.