Have any of you watched an idiot grind anything on a grinder. I have seen so called mechanics and machinist , jam the piece in so hard it stops the wheel and do it from the side as well. I'm amazed some live , self taught hammer and chisel butcher's. The abuse a grinder gets is just criminal. Have you ever seen a lawnmower blade sharpener, made to rotate both directions, but if there not taught how to be used wheels are destroyed arbors bent motors burnt up. But I've only ever seen surface grinder wheels explode . I think the bonding agents are much stronger in the pedestal type machine wheels.
Now the sharpener in question. If you can put the amount of pressure it would take to break a wheel grinding a drill to sharpen then you need to be on a weight lifting team not a machinist. I own one of these and have it mounted to a 1"x 42" belt grinder, it's been used so often the platen needed to be replaced. At one time I owned and operated a sharpening service . Not for machine tooling but blades, saws , home , farm and garden. When the cheap throw away years started it was no longer worth the time to do sharpening. Circular saw blades up to 6" a big $1.00 each. handsaw filed and set for $5.00 , those were done by hand and took an hour or so. People thought I was robbing them too. Enough tangent if you use the tool as it's supposed to be you will never explode a good wheel on a grinder.
Don't ever be afraid to tell someone there in danger , it may save your hide and others. So really your right.