Well, until you open a browser... or five, because these days nobody wants to build native applications anymore and instead they shove webapps into electron containers.

Right now, my laptop doesn't have to run much. Just a combination of KDE, browser, emails, music player, a couple of messengers and some background services. In total, that uses about 9.5 GB of RAM. 20 years ago we would have run the same workload with less than 1 GB.