That’s a stretch, Amazon has been known for bad quality for years. I have actively been trying to buy less from them since over a year now, I imagine others have as well and for longer. This trend was going to catch up with them eventually.
Not saying this is what happened but my theory has just as much evidence as yours.
Never have quality issues from them myself but my point was people order more stuff to accomodate wfh lifestyle because they spend more time in their own homes as opposed to offices maintained and kept up by someone else. A lot of products to help people adapt as well.
Most of Amazon employees live very near from the office, a substantial amount simply walk or bike to the office. Seattle downtown is practically an Amazon jungle.