It's not worth pointing out the technical flaws in the post[1]. It is obvious the author does not have a strong grasp of the tools he is criticising. A better example of this style of post is Oxide's evaluation[2] for control plane storage that actually goes over their specific needs and context.
[1] Ok, just one, Rick Houlihan is currently at MongoDB.
[1] Ok, just one, Rick Houlihan is currently at MongoDB.
[2] https://rfd.shared.oxide.computer/rfd/53