Using OSS in your product and giving the OSS devs resources to improve their software, instead of trying to take over their project? Did Valve not get the memo that big tech companies are supposed to be evil?? Oh right, they have a monopoly on video game distribution and all of their products rely on DRM.
Like many GUIs it makes it so you don’t have to remember and type a bunch of commands to carry out basic tasks. I especially find it convenient for checking logs. But no unique functionality compared to CLI. So it’s a matter of preference.