Amazon has a quota for firings/quitters(referred to as URA). Managers must terminate a certain number of their employees per year. The allegation is that some people are hired for the sake of fulfilling the quota for managers who want to keep all of their current reports. In other words they are hired for the sole purpose of being fired later so that managers can have a better firings metric.
Yes this is clearly enough written by a non native English speaker for which this could well be the third of fourth language.
Working at Amazon India appears to be a death trap, not surprised the bottom feeding of the Bezos-beast is notorious. I gladly pay more to not buy from them.