Ever since KDE made their software more modular with Plasma 5 / Frameworks 5, a Plasma session can be cut down by a lot. Personally, I don’t think it matters much because as soon as you browse the web, the RAM demands of the web browser dwarf that of even a fully decked out desktop anyway, but the options are there – perhaps for certain use cases that don’t involve web browsing.
Ever since KDE made their software more modular with Plasma 5 / Frameworks 5, a Plasma session can be cut down by a lot. Personally, I don’t think it matters much because as soon as you browse the web, the RAM demands of the web browser dwarf that of even a fully decked out desktop anyway, but the options are there – perhaps for certain use cases that don’t involve web browsing.