I think your missing the point about the whole "linux desktop customization" hobby. The fun is in building the thing yourself by assembling software that "does one thing and does it well". Getting to use after it's built is just added bonus :)

It's also more convenient to just use KDE ;) but honestly any shell that's related to quickshell look like a pain to config and I probably stuck with the layout or style it come with, but with waybar I can make anything from scratch in just a few hours while quickshell require programming skill I don't have and I also got a real life job.