Because Google search isn't a hypertext document, it's a web app that presents dynamic ephemeral content to the user. There's no need for stable hyperlinks, since either you will click them within a few seconds, or they will disappear forever, and it shouldn't be a problem to indirect via Google when clicking them, since you just made a request to Google to get the link in the first place.

Ask the grifters and bots. If you don’t adapt get ready to get bulldozed.