The slow pool of ram is still over 50GB/s. That is mostly used by the OS but I believe some additional space was given back to devs in 2022. Likely once they optimized the OS
“Hundreds of additional megabytes of memory are now available to Xbox Series S developers"
www.gamesradar.com
BG3 requires 8 gigs of system ram + 4 gigs of vram. However windows 10 requires 2 gigs of ram and windows 11 requires 4 gigs of ram to be installed. Then you have to include steam in the ram calculations.
Anyway the incompetence of the devs may help out all gamers in the long run since I am sure MS will be helping them take advantage of newer featurs in rdna 2 like sfs and direct storage which can then be used in the pc build and series x build.