The non-union drivers in cooperation with Amazon* actively undermined another established union. Sure, yeah. I'd say until they organize or shut-down, they can share some of the blame.
There is no game-changing paradigm shift to Amazons delivery driver business model. It was always simply to undercut an established middle-man that already had unionized. It's just deregulation & union-busting with an extra degree of separation. It's disappointing that so many laborers don't recognize this.