I got it second hand and the previous owner didn't use HDDs just NVME and tosses the brackets. I've mounted it better since that pic was taken, but the drive also doesn't really get much use, I just keep .iso files and backup installers there.
Yeah... recently got an o11d evo xl, lots of space in the other compartment for all my wires, just shove em right in there, and don't worry about it... yep.
For me this is a great solution. I don't want to tie down cables, because I tend to move and tinker. Same for my desk cables actually. They get a single velcro strap so they don't bother my feet.