To me it read like an affectionate piece, not a harsh critique.
That case was a beauty.
I find it incredible how indifferent and uneducated I was back then, about how much power it uses and what the consequences are on a larger scale. I remember keeping it powerd on 24/7 (of course with periods in which it slept). Nowadays I am (hyper)aware of the power consumption of pretty much every device in the house.
Like others have mentioned here, its heat output was insane. I had to have the house air conditioner on on cool days because of that one room. In the winter, it was the warmest room in the house. It didn't even feel all that powerful to me, as I compared it to a newly build x86 system I had put together at the time.
Luckily Apple read the writing on the wall and corrected course accordingly.