Nice little guide. Just completed similar maintenance on my 11th gen.
But, what are those strange cross-shaped screws? Joking, joking. I’m just not used to seeing the ubiquitous PH screw in Framework products!
With them being a relatively common failure point in otherwise healthy systems, my personal preference would be for the fan to be removeable/replaceable/upgradeable by itself. Though I understand why the tradeoff was made to keep the whole thing as a unit. I wonder what bearings are used, and what kind of MTBFs they have.