I live in a big city in the center. When i activate “Show bluetooth devices without names” in the developer settings of my android 13 phone, there appear loads of this devices. I have no clue what they are. Does anyone know? Are that the bluetooth nanobots of the vaxxinated people? (/s to last question!)
Probably just because you live in a big city and there are a shitload of bluetooth devices around. If you’re worried, try moving out of bluetooth range and scanning again to see if any of them don’t change.