Amazon or any employer should still be able to make their case, even if they're wrong about some things ...
Indeed, a lot of unions, especially the big, old ones in the US, have become lazy and more interested in making nice deals with management than with sticking up for the workers.
That said, the experience the workers get from the process of unionizing in the first place can give them the confidence they need to realize that the union bureaucracy isn't doing everything it can, and to pressure it to be better (by things like wildcat strikes, as the teachers in Virginia did very successfully a few years ago).
> Amazon or any employer should still be able to make their case, even if they're wrong about some things ...
I recommend re-reading the post you're responding to, which addressed that the first time you said it.
Taking ownership of the failures that led to the conditions which created support for the union vote in a substantial, committed, and convincing fashion is hard, but potentially an effective way for employers to change the direction of the case they've made to employees.
Directly instructing employees to vote "no", lying about how unions work in their area, lying about the voting timeline, installing an easily surveillable special mailbox for union votes, and pressuring the government to alter traffic controls to prevent employees from being able to spend time outside the workplace during the union voting period - this is how Amazon has chosen to make their case.