No it’s not just an on/off toggle. You’d have to uninstall the plugin. Install/Uninstall instructions are on the repo page. https://github.com/Diolinux/PhotoGIMP

It’s basically just a drop in configuration to make it look and feel more like the Photoshop interface. Can you accomplish the same with tinkering? Sure. Do I want the spend all day trying to make it look pretty when I need to actually be working in the software? Hell no. Just drop in the plugin and get to work. It has it’s place. It would be less necessary if GIMP default layout didn’t suck right out of the box.

I’ve been using Photo Gimp plugin with it for years. Otherwise the interface would be an absolute mess.

For the PC Monitor issue: To prevent this sort of behavior. Open Group Policy Editor Computer Configuration>Administrative Templates>System>Device Installation Prevent automatic downloads of applications associated with device metadata = Set to Enable.

To get rid of it once installed you have to remove it from the Windows Store since it’s an app, not an installed program. For me, this was not possible as there was no way presented to uninstall it in the app store. I had to do it from terminal with this command, which could vary a bit depending on the exact app version:

Remove-AppxPackage LGElectronics.LGMonitorApp_1.2606.1601.0_x86__cfnzzhwkr8z5w