And also in case you missed it, Amazon is still in bed with SpaceX trying to have the National Labor Relations Board (the US federal agency that stops companies union-busting) declared unconstitutional.
It's not enough to retaliate against union organizing in their own houses, they want to ruin collective bargaining for everyone.
https://apnews.com/article/amazon-nlrb-unconstitutional-spacex-elon-musk-ab42977117d883e97110a7bf8e8b257f