It feels rare to see Amazon ever make a change to such a publicly stated policy like this...
Jeff Bezos recently stepped down as CEO. Google tells me that happened July 5th of this year, a few months ago.
He founded the company. It's essentially under new management for the first time ever.
I don't think you can infer much from this incident. There are too many unusual factors at play and we don't have an established track record for what the "new normal" (post Bezos) will be for Amazon.