It makes sharing files between your PC and phone super easy. And if you set it up right, you can even browse your entire phone's filesystem from your PC as well. Great if you take a lot of photos or download a lot of memes on your phone and want to quickly offload them to your computer. It also lets you play and pause media from your phone, so if you're playing music or watching a movie on your PC and need to pause while AFK, then it comes in pretty handy. Not only that, but it also has a presentation remote and can turn your phone's touchscreen into a trackpad and keyboard; great for HTPCs.

Those are just the features I use, it has way more than that. imho I think it might have too many features lmao

EDIT: Also, how could I forget about the feature that I mainly use KDEC for, the battery indicator plugin. It lets you monitor your phone's battery from your computer.

Btw, if you want rounded corners, blur, and window shadows in sway, consider checking this out: https://github.com/WillPower3309/swayfx It's availible in the AUR, too.

Sorry if I'm wrong, but doesn't lxappearance only set the GTK-2 theme? You set the GTK3 theme via dconf or set the GTK3/4 theme using the GTK_THEME env var. There are hardly any apps that use GTK-2 anymore; only one I can think of off the top of my head is PCManFM.

Whenever someone types PopOS as Popos, I can't help but read it as Poopoos