If you ask a Bay Area software engineer, they'd give some feel good answer about how they love overpriced mom & pop shops and Amazon is to blame for their demise.
But, to overwhelmingly large portion of customers of Amazon, the middle class, it has provided an unthinkable amount of value. If it didn't, they'd stop using it. It is doing even more in developing countries.
And we're just talking about Amazon store.
You consistently want to look at the impact Amazon had on consumers, which may well be positive, while ignoring that they can only achieve this by exploiting their workers.
So I think it's pretty fair to say that the burden of proof is on you that Amazon is worse than industry average, since people are voting with their feet to work for them.
I will tell you one thing in advance: if you touch systemic issues (such as unemployment in general), then you're advocating for a freer market with less unions, because that's how you create jobs.
We should pass laws that provide safe working conditions. OHSA is the body that governs that.
I would be very very surprised if there is a majority of the people working for amazon that wants to form unions, I'm sure it's just a small minority.
The actual working class people probably really don't want middle class people to "fight" for them in this way, and be used as puppets in their virtue signalling competition.