iot – Are smart plugs safe? (Xiaomi in particular)

Are smart plugs safe, Xiaomi ones in particular (Zigbee and WI-FI versions)?

My main concern is that the plug is connected to Mi account and allows remote management. In case hacker gains access, can he reboot it dozens of times per second, so that would lead to spark, shortage and ultimately cause fire?

Should I be concerned about physical safety buying such devices?