Virtually no one gets sacked for being 1 or 2 items under the rate. Those times are loooong gone. Its actually pretty hard to lose amazon job these days, you genuinely have to put 0 effort and that still might not be enough if your area is low on workforce.

Only exception is some safety/behavior violations but performance wise its not gonna happen unless you dont care, at all. But then who would want an employee like that.