He mentions petitions with thousands of signatures. Are all of those people just…I mean, what?
If they were lying, then Amazon could easily come out and say, "They're asking for regular breaks every four hours and we literally give them that. They ask for PPE and every employee is given X, Y, Z. They want us to reduce our carbon footprint by 10%, here is an independent audit showing 12% reduction." (etc.)
In situations of extreme power imbalance, it's not unreasonable to default trust the person not in power who is taking far greater risk.
Sometimes you'll be wrong! But the burden of proof is on people in power.