Damnit, you’re right!

But for real, I think you misunderstand the point of documentation. Even if something were truly, literally flawless, having documentation would still be a net gain. It isn’t only to fix something when it goes wrong, but explains how things are working. If the only way for something to be literally flawless in your world view is for it to be so self explanatory that an idiot seeing it for the first time still understands it perfectly, nothing in computing can be flawless in that way.
The pedantry on this point is so unhelpful as to be actively harmful to the rest of the discussion.







Being fully honest, with that motherboard it will likely be better to attempt a new, fresh build.
Maybe something like this, reusing your RAM, using the stock cooler.
I know you want to upgrade your current parts, but there isn’t much that hadn’t already been said (motherboard layout, case size, power supply). Bumping up RAM to 16GB or even 32. Maybe looking at SFF GPUs like this.