According to official statistics [0] the Golf is still selling more than twice as many units per month and the ID3 is selling 50% more than the Model 3. The Model 3 is more comparable to the BMW i3 numbers wise.
Especially in that region, I would take this vote rather as an indicator of the lack of alternatives. Amazon is so large that they could simply scrap that location without being that bothered, yet the workers do not have that freedom. The choice is between taking what you can get even if it is tied to bad working conditions or having nothing at all.
It's a shame that the third way to spend the money is totally forgotten now apparently. Yes you can re-invest, give back to shareholders, but why not increase wages?
At least in Germany that is due to the fact that taxes and afaik fines are not directly used for such things but are added to the budget which then in turn is used to fund these things