....
Today I would say 12GB system ram and 4GB video ram is still reasonable to not worry too much and best to have at least 16GB and 6GB card in which case there is little incentive to upgrade, at least from memory side of things.
8GB system memory sucks today because modern browsers tend to hog up memory like there is infinite amount of it... and also running any development/productivity tools with little memory is asking for head ache XD
Steve shows why 12 GB just isn't worth it for DDR4 systems:
Perhaps, nest year he will try 24 GB, which won't get the memory penalty of Flex mode. Also, using the 3GB GTX1060and 4GB RX570 may have been more favorable for the 12GB flex.