I'm interested by one (not for big data) but only 8 GB or RAM is kinda really sad.

My good old LG Gram (from 2017? 2015? don't even remember) already had 24 GB of RAM. That was 10 years ago.

A decade later I cannot see myself being a laptop with 1/3rd the mem.

Did your LG Gram cost $450 (to make for $600 in today's money) in 2015-17?

If it didn't, Apple has other laptops today with more RAM.