Incorrect keyboard shortcut

It looks like some shortcuts on macOS are tied to the system settings and unfortunately there does not appear to be any way around this without a [surprisingly] fair amount of work. The way it works (as I understand it) is basically that if there is a shortcut on the macOS Menu bar, then it is tied to the system settings.

I thought that if I perhaps changed what the shortcut was set to in macOS (via https://support.apple.com/en-nz/guide/mac-help/mchlp2271/mac), then I’d be able to remove the old one in the browser (or set another command to it) but unfortunately, the original Cmd + Shift + C shortcut remains and still cannot be removed. It also appears to override any other action set to that shortcut (for example, I set “Open Guest Window” to Cmd + Shift + C, but the shortcut still opened dev tools).

Will dig a bit further on this to see if there is any other solution but so far it does not appear to be possible.