[actually_a_dog]

I'm not even sure I'd trust it to hold more than a single 1U server as depicted in the article, for that matter.

[_jal]

Adding more kit increases rigidity. A "full rack" would be a stack of servers on the floor, with the table keeping them stacked.

The least-stable arrangement would be a very heavy 1u device at the top.

[weberer]

I think you're severely underestimating the strength of particle board.