I had a cutoff blade explode once inside a small horse trailer. That will wake you up real quick.I had 2. A big heavy 3 phase one, all solid cast iron. Could rip-cut 4" thick Aussie hardwoods. Rise & fall but no tilt on the blade.
Also a cheap POS Chinese made contractor model with tilt. I hated that saw with a passion. As soon as I finished building my boat I sold it. The big saw I kept, sure it'll take your arm off in a nanosecond but I'm careful.
Now I need another one with tilt so I'll see what's available. But I always treat them with caution. Same with the 18" bandsaw.
As for guards on angle grinders, all mine have them fitted. Mostly I use 5" grinders, I do have one 9" grinder but it's for desperation measures, that thing is lethal.
Doug is an idiot.