It was a postmortem without the mandatory "how can we prevent this in the future" steps…

I think that's a little unfair given what was in the postmortem. It may not be a separate section with the key points, but the information is all there of what the issues were and what the solutions are. I think it's fair to assume they're actually acting on those without them needing to be reiterated at the bottom of the page.

I agree, we don't really need a "key points/future actions" section that boils down to "The service will be geo redundant"

Well, for sure he has fixed several bugs, but he didn't say that he would be testing his disaster recovery procedure every year in the future for example.

Yes, rehearsing the process every year is the main lesson learned. Sorry, it was getting late and I wanted to get the email out so I cut it short.

In 15+ years of running this service, this is one of two (2) postmortems he's ever published, and the first in eleven (yes, 11) years.