They say GNOME isn't a copy of macOS but with time it has been getting really close. I don't think this is a bad thing however they should just admit it and then put some real effort into cloning macOS instead of the crap they're making right now.
Here's the thing: Apple's design you'll find that they carefully included an extra margin between the "Don't Save" and "Cancel" buttons. This avoid accidental clicks on the wrong button so that people don't lose their work when they just want to click "Cancel".
So much for the GNOME, vision and their expert usability team :P
So, copying is making something identical. But something that’s different would rationally be called not copying, whereas you categorize it as poor copying. Interesting.
Ever hear of two things just being similar? We are talking about a UI - these things have always followed patterns that change as usage patterns change in the industry. I think you must be young and/or inexperienced because this kind of trend goes back to the ‘80s.