Hi Yaakov,
Sorry about that. The tutorial is 2 years old, and in the time that's elapsed, the effect is categorized in the Obsolete folder. That means the effect is still available, but the code it contains is old and ready for either updating or removal.
I don't know what the product team has planned, but I'd say that the effect is probably heading towards the scrap yard in future releases. The good news is that you can still achieve the effect with controls for secondary color correction tools in the Lumetri Color panel.
So, follow the tutorials for now with the obsolete effect. It should work fine. After the effect is removed, come on back with questions. We can help you with that alternative method whenever you're ready. OK?
Thanks,
Kevin