Agreed. I remember when the industry wept tears of joy when tower cases and TFT's were invented because of how much desk space we regained vs those beige desktop AT cases with CRT's on top. I suspect it's an "artsy" thing as a MATX on the floor out of the way gives even more desk space than half the "space saving" fat cubes (and USB ports at the top are just as reachable...)I haven't had a PC on my desk in 20+ years, do not see the appeal of a bulky box taking up space on my desk, it serves no purpose there whatsoever.
A good case is a medium tower, with good ventilation and sound insulation, one that sits next to the desk, or inside it. The rest is some show-off nonsense. Those cubes are just as bulky and awkward to carry anyway.
Sure, that's why all the painted chassis cases I've built in, used, over the years, haven't had any such problems you've pointed out. All are stable, think I've seen a single PC with a grounding issue over the years and that turned out to be a bad front panel cable that was replaced and the system ran fine after.All of these cases have a serious problem, they are painted!
All the panels are electrically insulated which breaks the case ground bonding to the PSU and all of the electronics with in.
A real PC case provides an extra ground connection to everything that goes in it and prevents RFI EMI issues as well as safety.
I have a Antec Sonata that is 15 years old and is a bare metal chassis and is bonded correctly.
With out the proper electrical bonding, PC systems will be unstable and prone to failure.