The fact that they put this notification out weeks after it happened and after sooooo many authors contacted them (possibly even customers) is not great in any way. It's one more nail in the coffin of the idea that Amazon is flexible and nimble. It's become a giant unmovable beast with poor internal communications and unresponsive protocols to complaints.
There's no question that even a five minute investigation on the first notification of a problem would have shown that the problem exists, yet for weeks they gave the exact same robo-response indicating there was NO problem.
Overall, this trend from Amazon does not bode well.
I didn't know that anyone ever thought there was a possibility that Amazon was flexible and nimble, at least not when it comes to KDP. It seems to move very slowly on any issue and doesn't seem to care about the program a whole lot. I mean- in general, Amazon can probably be flexible and nimble about programs or priorities that it cares about- but, I don't think KDP or KU is one of those things. I think it is peanuts, if not a loss leader (if speaking specifically about KU), compared to other Amazon programs. So, Amazon doesn't have an incentive to worry about it much.
Of course, my view on Amazon in general is likely a lot more cynical than most. I wasn't allowed to post on The Other Board about my views without my posts being deleted (so I stopped trying or going there much). I think that indie authors are just being used as pawns by Amazon in its goal to be a huge monopoly and control everything. So, they want us to be in KU not only so that the other platforms lack authors and content and eventually fail, but, even more importantly, to create content cheaply for them and to get consumers into the ecosystem with KU, so that while they're there they will buy everything else, from toilet paper to expensive computers.
Also, I think that above all, Amazon cares about collecting and analyzing data and consumer behavior so it can continue its plans to take over pretty much every industry and be a monopoly. So, things like making sure books show up on pages, or making sure series pages are created correctly, etc., are just at the very bottom of Amazon's priority list. Not to mention that it hates to spend money or resources on real human employees to do things, and everything possible is done by computer. Therefore, I never expect Amazon to be quick to move when it comes to KDP, and I'm very surprised when they do.