true, but if you get in the way, you have a lifeless/corporate-feeling blog, which is (subjectively) worse.
as someone who has worked in the blogging trenches, i can say that overzealous/overconservative processes can really stifle blogging flow and the primary alternative you're competing against is the engineer writing for their personal blog, which they know has long term career value as well. usually not all participants in the review chain are equally bought in to growing the blog and you eventually get your best writers self selecting out if you aren't careful
i do like the buddy system you propose, that seems like a nice solve!
what are your thoughts on having dedicated content writers - like technical writers or developer advocates - working on/owning the blog, vs "all engineers are explicitly encouraged to blog"?