quarantine 'em

Basically the epact is a highly complex derived property from a relatively simpler underlying lunar calendar

And understanding epacts just makes the underlying structure of the Metonic cycle seem unapproachable

Now here's the thing. I'm not a historian, so this is second-hand, but from what I understand this IS deliberate obfuscation by the Church

Making Easter difficult to compute makes you reliant on the Church's calculations to know when your feast days should be celebrated

And once you can convert any Gregorian date to/from a lunar date (i.e. a position in that cycle) (also very doable), Computus becomes simple

Easter falls on the first Sunday following the "Paschal full Moon".

The "Paschal full Moon" is the first ecclesiastical full Moon on or after the ecclesiastical Northern Hemisphere spring equinox.