@mdhughes I'm fairly new to GNU/Linux, just switched in February to Mint on two older computers. I think I may be missing your point. As a relatively new user to this os I just open the Software Manager, search by app name or keyword and install. If I decide I don't need an app I can uninstall from the same place. It feels about the same as my previous experience using Apple's App Store on a Mac.
I know it's an option to use the terminal to install software but I've not needed to do that.