Does it actually scale well to that many cores? If so, that's quite impressive; most video game simulations of that kind benefits more from few fast cores since parallelizing simulations well is difficult
these big high-core systems do scale, really well, on the workloads they're intended for. not games, desktops, web/db servers, lightweight stuff like that. but scientific, engineering - simulations and the like, they fly! enough that the HPC world still tends to use dual-socket servers. maybe less so for AI, where at least in the past, you'd only need a few cores per hefty GPU - possibly K/V stuff is giving CPUs more to do...
No, see https://m.youtube.com/watch?v=44KP0vp2Wvg . You're right it didn't scale that well