Again, the base model of 14" and 16" will start with 8GB of RAM and 256GB SSD. Why would Apple suddenly change their tactics and offer what consumers want in the base models?
Because they want people to buy the Apple Silicon versions so offering them at the same price as the Intel models with less RAM and storage isn't going to encourage customers to do that.
And again, Apple kept the base RAM and storage capacities consistent when they switched models from Intel to Apple Silicon. The Intel 13.3" 4-port MBP and 16" MBP have 16GB/512GB as their base configuration so the Apple Silicon models will also have 16GB/512GB as their base configuration.