I assume Amazon is paying for the time these employees have to spend in the mandatory information sessions? I don't see the problem.
Amazon MUST get the opportunity to present its case even if anti-union is not a popular stance. If the deal offered by Amazon is so bad then what is the harm? We should not be shielding people from information because we don't believe they're smart enough to see through it... that reeks of elitist paternalistic thinking.