This scares me more than "LLMs replace humans". You're going to have to take away time from doing the actual work to replace it with doing bullshit work to impress an ever more detached "decision" layer.
I don't even think the posted page qualifies as a "simulation". It's at best an animation with a calculator/model side-by-side.
It's so distinct... it can't be an amalgam of the most popular design choices, can it?
"For calibration: AI-generated design right now clusters around three looks: (1) a warm cream background (near #F4F1EA) with a high-contrast serif display and a terracotta accent; (2) a near-black background with a single bright acid-green or vermilion accent; (3) a broadsheet-style layout with hairline rules, zero border-radius, and dense newspaper-like columns."