It's more that we, the players, only witness a handful of primal summonings. This makes it difficult to determine conclusively how frequently the primals are summoned by their relative beast tribes.
Clearly, if they were summoned and promptly defeated every few days, the main character's assistance in putting down the Primal thread wouldn't be treated with the impact that NPCs seem to place upon it. Not much meaning to the Scions' assistance if it's a routine task.
Clearly, if they were summoned and promptly defeated every few days, the main character's assistance in putting down the Primal thread wouldn't be treated with the impact that NPCs seem to place upon it. Not much meaning to the Scions' assistance if it's a routine task.