Do I need to have the Gift to be a Wizard / Warlock etc?

The group is getting started (I’m the GM), and we’re confused – do you need to take the CP Advantage "the gift" in order to be a Mystic class? (Warlock/Wizard/Summoner etc)? It isn’t mentioned as a requirement, but it’s heavily implied by how the advantage is worded. Is it intended that these classes have a generic -2 Advantage point balance? Makes a huge difference in character generation – thanks in advance if anyone has any insight.