Yeah it’s not really so much about data loss as it is about it randomly dying one day. Or worse, slowly dying and being annoyingly inconsistent about operating properly. These devices have very low QC standards.
I don’t think it’ll actually cause data loss (although that’s a possibility if there’s any corruption introduced through invisible failures), but I usually find these devices present headaches that outweigh their low price.
Yeah, I understand that, but electrons don’t really want to bounce around freely. They want to find a proton to hang out with. If you want to keep a charge, you either need stable ions like in LiPo batteries, or maintain an external power source.