if there are plans to rework the tutorial there will probally a point which tackles the subject saving.
i think a good reward for completing this step would be a 100% moonshot so basically a free moon except you have to pay for the 1667/1000/815 lf depending on % df
the task could be to fleet save 7 days in a row.
e.g. you have to buid 20 lg for this tutorial step, send them away at least 4 hours a day and make sure there are not more than 10k total ressource left on the planet at the time the fleet is started.
the tutorial could suggest to spend ressources on mines/research/defence or just on more large cargo if the 20 are not enough.
that way new players get trained to always spend their ressources and/or fs them before they go offline.

how is a moon a big advantage?
its more handy for fleetsaving because you have more room for who long you want to send the fleet away, yes.
but you dont gain superpowers with it, especially if everyone could get a moon that easy.
its not like moons are rare at the moment or hard to obtain.

its something you have to hear/read about or be "forced" to do via a tutorial
there really is no difficiulty in that
mb some folks are too lazy to do it but certainly not too stupid