Sdxl was 3 models too. Base, refiner and vae.
Cascade is 3. Lores, hires, vae.
69 MJ is 19.17 kWh. About 86p of electricity at today's wholesale price in the UK (£45/MWh: today is fairly average).
The research they are doing is great, but there's so much engineering to be done to turn fusion into something practical; something capable of running streams of pulses, not just single ones.
This was the last experiment for this reactor running it outside of design limits.
The trained model is a work derived from masses of copywrite material. Distribution of that model is infringement, same as distributing copies of movies. Public access to that model is infringement, just as a public screening of a movie is.
People keep thinking it's "the picture the AI drew" that's the issue. They're wrong. It's the "AI" itself.
What do you think the trained model is other than a derived work?
Promotional images are still under copyright.
Copyleft is not public domain, and requires copyright law to function.
The article uses Midjourney. Nobody is tuning it.
...and that's why the person you originally replied to asked their question. General popularity is generally a bad proxy metric for personal preference.
We, the human race.
...or at least in this article, we the British, as the stats are for the UK.