Duly noted, though any player who wishes to spread the secrets of Theurgy to XoR’s educated populaces will eventually render your observation obsolete (in their respective playthrough/gameworld).
Luck, or deliberate conspiracy? 
Random theory: a rebellious Kryptast (or a Kryptast under the employ of a rebel, e.g. Sarcifer) identified Ganelon as a prospective young recruit/Theurgic student for their cause (thus beginning the process of discreetly dropping basic Theurgic literature into Ganelon’s bookshelf)
Unfortunately, because Ganelon proved too dumb (and/or too lazy) to meet the recruiters’ expectations, the recruiters had to look elsewhere, and to their complete pleasant surprise is INT MC (Ganelon’s companion): who did what Ganelon could not- grasp the basics of Theurgy.
How cool (and creepy) would it be if turned out that Sarcifer has been monitoring INT MC’s Theurgic career since Day One? (thus adding even more weight to Havie’s earlier stated observation that Sarcifer is interested in using/manipulating MC for his own agenda)
And what if instead of being the Hegemony’s Kryptast, Breden was a Kryptast-in-training who was recruited by Sarcifer? (after Breden’s coastal “old masters” had previously died and younger Breden (on the run, or in hiding) was desperately searching for a new employer/purpose)
A reasonable doubt to be had.
Still though, even if Calea isn’t a Theurgic threat, she is probably going to become a formidable player in XoR’s aristo intrigue (and intelligence agency shenanigans) in the future games to come.
So regardless of whatever Calea’s skillset ends up being (by the time of G2’s final draft), I get the feeling that it will be in our best interests (as players) to kill or recruit Calea at the earliest available opportunity.
To borrow an applicable quote from (post-character development) Amanda Waller: “Maybe the angels need a sharp sword too!” 
And FYI, around Jul 2022 (on the Uprising thread), I previously asked Havie:
"Could a “good cop, bad cop” dynamic (and/or Roosevelt’s “big stick diplomacy”) be sustainable between high anarchy compassionate MC and Kalt/Kala? (In the context of their leadership style during later games)
MC would be the one who “speaks softly” while Kalt/Kala (and other enforcers) “carry the big stick”.
Havie’s answer was as follows: “K could well be the “bad rebel” to your “good rebel,” but it wouldn’t be an act, and they wouldn’t stop just because it was hurting your efforts to make some noble alliances.”
If you’re interested in sharing, I’d love to hear about what sort of name, backstory, anarchy, and choices you made your “Happy Holy Homelander Helots” in Game 1!
As for me…
1- HughMyronBrough’s “Savage Warrior” Helot Run
a. Tartarus (Forgot to take notes on what his last name was, sorry) : 2COM/1INT Helot, Ruthless/Devout Homelander, High Anarchy - Uprising Start
b. MC’s goal: Join up with the drudges and Cabelites to get revenge on the aristos, forming a "blue collar coalition/mafia”
c. Game 2 Grand Shayard recruitment targets (per HughMyronBrough’s advice on Discord): Laborers and Foreigners
2- HughMyronBrough’s “Prophet of Peace” Helot Run
a. Velen Stardust: 2CHA/1INT Male Helot - Compassionate/Devout/Homelander
b. Game 1 notable actions: Currently finished (mostly) pacifist run as Eclect Velen Stardust by Game 1, married Breden, and am heading off into the Xaos lands for “honeymoon” with Breden
c. MC’s goal: Aspires to become the pope/Eclect who crowns a Laconnier monarch (who could be swayed (and/or intimidated) to institute helot-friendly reforms)
d. Game 2 Grand Shayard recruitment targets: Laconniers and Priesthood
3- HughMyronBrough’s “Prophet of Peace” Helot Run Variation 2
Assume (mostly) same facts/goals as #2, but with the exception of the following key differences: Velen is a prophet of the Inner Voice (instead of Eclect), and he actually managed to complete Game 1 with an unbroken pacifist streak
The Hegemony was already an impressive magocracy/national superpower to begin with; Saruman is mainly interested in shifting the Hegemony’s capital (and balance of power) from Karagon to Shayard.
(though as a pragmatist, he WILL fill his royal court with cosmopolitans that can help him keep the Hegemony together)
As for Halassur, Saruman is looking forward to conquering it with his legions of “Uruk Hai” Plektoi and (the occasionally unleashed) Xaos-storm WMD!
Ooh, I like the way you think! 
And on another note, what’s your gut feeling on the sort of title Calea’s faction would adopt?
1- Caleamites (Taking inspiration from the Wulframite movement of the upcoming Lords of Infinity, FYI)
2- Plural noun version of the Keriatou coat of arms (@Havenstone, was it ever clarified in Game 1 which animal or object the Keriatou coat of arms portrayed?)
3- Calea (In the same fashion that Walking Dead’s Negan insists that his followers repeat “We are Negan”, or how Dragon Ball Z’s Saiyan planet, king, and prince were all named ‘Vegeta’)