The keyboard shortcuts are way more inconsistent on Mac. On Windows and KDE (and I presume Gnome though my experience is very out of date), Ctrl shortcuts pretty consistently relate to the window that currently has focus, and Meta/Windows shortcuts relate to manipulating and navigating windows as entities. No such rule of thumb exists in Mac.
The simplest example of that to me is Cmd+T to open a new tab, Ctrl+Tab/PgUp/Dn to cycle through tabs, whereas it's Ctrl for all of them on KDE or Windows. There simply is not a way to deterministically switch to a specific other program/window, where in Windows/KDE you can do Win+1 to move to the first program on the taskbar (and so on with other numbers). And the behavior of Home/End is very inconsistent between programs, with seemingly no consistent way to move the cursor to the beginning of the current line.
The simplest example of that to me is Cmd+T to open a new tab, Ctrl+Tab/PgUp/Dn to cycle through tabs, whereas it's Ctrl for all of them on KDE or Windows. There simply is not a way to deterministically switch to a specific other program/window, where in Windows/KDE you can do Win+1 to move to the first program on the taskbar (and so on with other numbers). And the behavior of Home/End is very inconsistent between programs, with seemingly no consistent way to move the cursor to the beginning of the current line.