[Q] quick question topic

I have a Alcatel One Touch Pop 7 tablet from T-Mobile. There is someone on a YouTube video who has the same tablet, but has bricked it installing a custom ROM. He is begging me to make a backup of my "system" folder to send to him.

My question is, is that safe to do? I'm a complete noob when it comes to rooted devices, so I don't know if there is anyway that could be damaging to me, or if I would be doing someone a solid and helping them bring their tablet back to life.

Please, can someone advise me if this is OK or not (me making a backup of my system folder and sending it to him?)

Thanks in advance for reading and responding