I've been using arc browser as an alternative to FF, and they have a really helpful feature that is a keyboard shortcut to copy the current page link without losing focus from the page and no need of changing your flow.
I've been looking for alternatives, and the closer I found is to execute command + L and command + C, but even if I don't need to touch the mouse or tab key to copy the link, I lose focus and is not the best experience.
Another nice detail on this functionality is when you use their shortcut (shift + command + C), they remove all trackers from the URL
Firefox