I guess it shouldn't be really surprising, Samsung has already downgraded the RAM from 12GB/16GB for the S21 Ultra to 8GB/12GB for the S22 Ultra. It's plausible that they will further downgrade it to 6GB/8GB for the S23 Ultra, people who buy Samsung phones don't look at the specs anyway, they would have stopped getting them ages ago if they did otherwise, and Samsung can save quite a bit of money in this way.