The point isn’t that 8gb is unusable for light tasks. I have a $300 Lenovo with Windows and 8gb RAM and I don’t see any problems.
The point is that a $1500 premium device should come with 16gb RAM at minimum, because for the manufacturer the cost is almost nothing. Yes, Apple makes much more money selling extra 8gb of RAM for $300 rather than just put a 16gb chip for literally pennies and adsorb the cost but that’s because they’re scammers