Person who can't keep a secret, cannot possibly manage their own keys. If you can keep a secret, then you can manage your keys.

I feel like people are always trying to run before they can walk. Start with a watch only wallet set up using reputable hardware (seed signer, or coldcard). Next, because they'll always ask how to spend, a hot wallet with the understanding that it is vulnerable to spyware and zero day hacks. Finally, a demonstration on how to spend from the watch only wallet safely. Now the student has a convenience wallet to feel like they can practice using bitcoin, and a secure wallet for saving with the understanding that this is a secure vault by comparison. Its not as simple as writing down 12 words, but it isn't as complicated as multisig either.