Most AAA game studios target consoles first. Their in-house or external porting teams will then adapt it for Windows, but by then major engine decisions will likely have already been made in service of supporting the Ryzen/RDNA based Xbox Series and PS5 consoles. Smaller studios might try to target all systems at once but aiming for the least common denominator (Vulkan, low hardware requirements). Switch is a bit of its own best when trying to get high performance graphics.

Multi threading is mostly used for graphics, sound, and animation tasks while game logic and scripting is almost always single threaded.

I’m guessing that the “marketplace” and “sale” refers to sites like “Mage Space” which charge money per image generated or offer subscriptions. The article mentions that the model trainers also received a percentage of earnings off of the paid renderings using their models.

Obviously you could run these models on your own, but my guess is that the crux of the article is about monetizing the work, rather than just training your own models and sharing the checkpoints.

The article is somewhat interesting as it covers the topic from an outsider’s perspective more geared towards how monetization infests open sharing, but yeah the headline is kinda clickbait.