Based on my own personal experience I don't believe that to be the case, at least not all aspects of what you described. Perhaps it is not a "repaired" product, but it's pretty clear that it isn't very well checked over prior to resupply. Specifically, I received back a Mavic Pro on a DJI Refresh that had a completely non-functional camera focus. It turned on, but any check should have caught the fact that the camera was useless and wouldn't focus at any distance. Others have posted on this board as well with horror stories of receiving back bad units on a warranty repair/refresh.
That said, part of why I wanted to post this was that all we normally hear on a public forum are the bad experiences. While the fact that this happened in the first place is frustrating, **** happens and these are pretty crazy complex pieces of equipment. And the actual warranty replacement process was faster and more straightforward than let's call it the "perceptual average" from the message boards. So, yeah, my first post I was pretty frustrated but overall full process and receiving back a working unit in <3 weeks is good!
IMO DJI still has a pretty deep seated issue with their culture of customer service with respect to the US market, rooted in cultural differences that are pretty common, i.e. it isn't a surprise or uncommon. I do think that they continue to leave unneeded market risk on the table until that address that, but for now, an incremental improvement in the repair process is better than getting worse.