Had colon cancer
Has a colostomy
Was fired during my treatment
I'm very aware of how companies can try to discriminate against employees who are disabled. If Amazon tries to fire this guy for not meeting his "quota," then they also need to demonstrate that they've made reasonable accommodations. They also need to carefully document his performance issues. Juries are very amenable to a plaintiff suing for unfair dismissal.
Yes, this requires having enough money to hire a good lawyer, or finding one either working pro bono or willing to work on a contingency basis. Or finding an agency like the EEOC etc which will help with this.
The alternative is to just say "too bad" and let companies get away with this shit.