I think some of these (or similarly sized) drones were sent to Ukraine for use in urban warfare last year as a recon tool. They may have also used them for exploring recaptured mines (the kind for extracting resources, not a landmine) which were likely booby trapped.

All they need is a slaughterbot-style shaped charge or a dollop of thermite, phosphorus or a nerve agent and you'd have a weapon that may not be super effective but would have a huge impact on enemy psychology.

Get them acting as a swarm and you've got something really scary.