>but that's not even possible, because the platforms has different UI-s with different sizes, so you can't write one script and expect to work on multiple platforms.

game UI usually stays the same across all platforms. As someone who has written bots for video games that are cross-platform, it's nice to abstract away things like win32api when dealing with just trying to move the HIDs.

Plus if your language/software allows for pixel read-in (this does), I wouldn't blame the scripting tool for non-robust applications -- make your application a bit more intelligent. Don't just blindly click at preset coordinates and expect reliable/consistent results except for the most basic automations.