they reference their own submissions which aren't public.
None of them were released. They don't exist on any storefront or were available to buy. Therefore they aren't "existing".
On top of that, at the moment of acquisition none of them (referencing Starfield) had announced platforms, and two of them were not even announced to the public.
Should point out that when Starfield and Elder Scrolls 6 were announced, they were announced as next-generation hardware. The reason for this was at the time Microsoft and Bethesda were in the middle of acquisition talks. Those talks fell apart in the summer of 2018. They re-engaged in 2020 and eventually came to an agreement.