People try a diamond blade they CUT and come in size that will retro fit grinders and saws
Yes slower cut
yes more noise
but if the blade hits you hand
you might at best get a friction burn .
Sure it could cut your finger off but it would have to be intentional

A few weeks ago I mentioned how I cut a rotor off MY Dodge well I used my grinder with diamond blade
I have lost count how many cuts , same blade for a year
It's logical a blade that cuts cement or granite will cut metals