The link is broken for me
Edit: Seems like it's just the redirect that's not working. I can open it externally.
Redgifs doesn't seem to like being used as an image CDN, which explains why a direct link to an image takes you to the Redgifs post of that image, rather than the image itself
Edit: More info at https://github.com/honestbleeps/Reddit-Enhancement-Suite/issues/5233#issuecomment-643600496