Finder is missing so many basic features that explorer.exe and Linux file managers have had standard for decades. Simple things like easily copying paths (and no, not with a weird keyboard shortcut nobody uses - a simple GUI method, preferably with an address bar, which Finder also lacks), copy queuing (pause queued copies rather than shotgun them all at once), cutting files (FFS why is this feature outright missing?…
A relatively universal aspect of macOS is that menu/context menu options can dynamically change as you hold down option. So for anyone vaguely familiar with the macOS operating system, it's easily found from a context-click or the edit menu while holding option.
If you're doing this more than once a week, it's command-option-C on Mac and control-shift-C on Windows. Learning this is as simple as any other keyboard shortcut.
Of course if you're just copying a path, chances are it's to paste into the terminal. There's an easier way. Just drag the file over the terminal.