The Snapdragon 8 Gen 1 was manufactured by Samsung and it had thermal issues. Its boosted version, the Snapdragon 8 Plus Gen 1 exhibited none of the problems of the Gen 1, likely because it was made by TSMC.
Tipster claims the Qualcomm Snapdragon 8 Gen 2 Mobile Platform for Galaxy will be made by TSMC
We shall find out more on February 1 which is when Samsung will formally unveil the Galaxy S23 series. Registrations are already open and earn you free credit for use towards purchases.