Possibly a dumb question: What is the point of using Lutris versus just adding a non-Steam game like normal?

I don't know why but Lutris has been consistently dependable at installing and launching gog games but installing them via heroic launcher has been hit or miss where it says it can't locate the install folder. Maybe I mishandled the mounting of the SD card but Lutris has been a simple way to install more gog games from my library so that's why I use it more than adding each non steam game one at a time.