Most "single board computer" listings read the same because most single board computers are built to do the same thing: be a small desktop PC. The Pi Zero v1.3 isn't that, and pretending otherwise undersells it.

This board exists for the moment you realize a project doesn't need four cores, Wi-Fi, or a GPU  it needs a Linux computer that disappears. A wildlife camera nailed to a tree for six weeks. A time-lapse rig watching a construction site through winter. A sensor node that should draw almost nothing at idle and never phone home unless you plug something in and tell it to. That's the gap v1.3 fills: it's the Zero generation after the camera connector got added, but before Wi-Fi got built in  which sounds like a limitation until you're building something that specifically shouldn't be on a network.

The trade-off is real and worth saying plainly: this is not the board for anyone expecting Pi 4-level performance, out-of-the-box wireless, or a smooth desktop experience. If your project wants Wi-Fi without dongles, the Zero W or Zero 2 W are the better call. If it wants raw compute, look higher up the Pi range entirely. The v1.3 earns its spot on your elemart listing as the deliberate, stripped-down option  for buyers who already know they don't need the extra silicon and don't want to pay for it.