Write them down is the one thing. But to store it properly and safely from theft, fire and other hazards is the hard part.

Just think about this: Many people can't even store the piece of paper with their own chosen password for their Google account nor remember the self chosen password.

Basically this claim can only be made by people that WANT others to lose the access to their wealth. But hey at least you encourage them to be the ones responsible for the loss and not blame a service they paid for.

It again proves my point that bitcoiners tend to say the want a good future for all but they only think about themselves.

Self Custody is not safe and secure for everyone.