While I’m not a fan of 8 GB RAM for a new laptop, I’ve used a Fedora Gnome system for a year or two, with just 4 GB RAM. I used it for simple tasks in a workbench, and it was a usable computer. It struggled only when I opened too many browser (Firefox) tabs. If I kept the browser tabs count low, it wasn’t that bad. Also, I used the same system with 8 GB RAM, and it was much much better. To the point you won’t really notice it’s something limiting. So, technically, 8 GB is plenty for an average light use.