For more information (and to learn how to take advantage before it's too late), visit https://tesla-referral-codes.com/tesla-ending-referral-program-feb-1/.
Mark your calendar. We've seen this movie before, and it is a lot cheaper than advertising. It will be back the next time they need a demand lever.
I doubt referral is that effective other than it helped a few youtubers to earn some extra income. Should have been stopped long ago but Tesla may have just got more data to support not doing it.