You got lucky. The inexpensive motors on many of these saws don’t usually have thermal motor protections so you need to be particularly careful. I don’t use sacrificial stock. I just make sure that the shutoff switch is adjusted properly
to shut the saw off at the end of the cut. I am careful to manually hold the blade up off the workpiece until it is up to speed to make sure that it doesn’t get snagged on something and stalls before starting to cut. This is a particularly good idea when cutting
rebar or other rough finished stock. And, I don’t let the saw run unattended; keeping within hearing distance is a good practice in case something goes wrong.