The picture there of the radiator, that is what Gamers Nexus was showing an at least 6 mouths ago. With those AIO's, a lot lot have these problems or people finding out so much later, the placement is wrong. The manuals are for sure not mentioning anything.
Some years ago, I spoke with Corsair about a model that even cools the VRMs and the Mosfets, to have a fan on top and blowing around the housing of those pumps. Here we go, some brands are waking up and lots more testing are done and designs.
I love people like Steve from Gamers Nexus, Hardware Unboxed, foolish Jay2cents, we need them. I wish I could, but yeah.
It is plain stupid, that "you" or I, have to dig into video's what is right and wrong to do. Or if something breaks, that can be solved by just a few cents. I am so happy with the Right to Repair going, even catching up in the EU. Lesser waste and the limit should be, dead=dead.