Sometimes I need to share the original reddit link for a few reasons such as its not viable to use because it doesn't show thumbnails, or lack of video player when used in say, Discord, so I have to manually copy & change the URL before I need to send it.
Other frontends like Libreddit for Reddit, Nitter for Reddit have a button on the top usually besides settings where you can get the original link which you can use, which I think is pretty neat.