If you do everything right there is not much risk. But I have never met a human who does everything right 100% of the time.

You can't avoid rare events like a wood piece breaking and things like that. I'm much more worried of angle grinder for example.

This goes back to the basic point of safety work: Even the best trained, most attentive and careful operator can get into dangerous situations. There's no way to anticipate the moment that their attention might wander or some external circumstance might just force the situation.