Too close for comfort indeed.
Back in the early 2000s was working with an experienced carpenter installing a countertop, and he went to catch the end of a circ saw cutoff instead of allowing it to drop to the ground. The waste fell anyway, as did the first inch or so of his index and middle fingers. It was pretty gruesome.
Tools have no compassion for flesh and bone.
Be careful, but not fearful.
And always wear eye protection, even when doing simple stuff in the shop. An eyeball is more fragile than a grape.
Look up "angle grinder injuries" in Google Images when you're bored. People have died when Zipcut wheels come apart.
I did. I looked. Whew. Eternal vigilance.