Grumpy Website

 

maybe someone can explain this to me. Why can some apps be deleted from Launchpad while others can’t? I’m not new with computers, I’ve been around Macs since 2007, I work in IT and I’ve seen a lot of “programmer’s logic” type of UIs, but still, I can’t come up with an explanation here. Those same apps are perfectly deletable from the /Applications folder, for example.