The grate is still in my hopper. I seldom remove pellets from the hopper. I even left them in for months at a time over winter and never had an issue.
I worked my entire career around machinery in paper mills, printing plants, envelope converting factories, etc. I have seen my share of mangled hands and arms; it is not a pretty sight. I even know of one instance where long hair got caught in machinery and scalped the individual. Fortunately, it did not end in fatality. While the risk of the auger doing such damage to my hands is small, the inconvenience of leaving the grate in is not so great as to compel me to remove it.
I see people all the time who take unnecessary risks such as not wearing proper personal protective equipment and removing guards, Some risks are worth taking, but some are not. Evaluate the situation with wisdom.