let them have a clue or whatsoever, so far it's cold storage it has no serious threat unless they can physically  attack the owners own which is another case on it can happen to anyone, what's essential  is keeping it in a safe place too.
Beginners  need  to be taught so they won't have to make some irrational decisions slike storing their seed in a password manager, email acount, cloud storage and so many more because there have been a lot of reports of stopen coins and it’s  as aresult of backing up their seed phrase wrongly.
One of the reason i  still don't like trustwallet till today, apart from not being open sourced, they still suggest and promote a method of backing seed to cloud storage