Spirit Beasts were rare precisely because they were too weak; their ornamental value far exceeded their practical use in battle.
Players captured Spirit Beasts out of a desire for self-challenge, collection, and the triumph of vanity.
Only after relying on the training system granted to Hunters by the System to strengthen them and fight together did it become a compromise for the sake of gameplay.
However, some players had raised a point on the forums—
"Natural-born weaklings and exceptional Spirit Beast babies encountering a heaven-sent System and then leveling up by cheating all the way, doesn't that make sense too?"
Indeed, thinking that way made it much more reasonable.
But these Spirit Beasts before us no longer had the opportunity to "never underestimate the potential of the young."
In Newbie Village, they were bossed around and directly stifled in the cradle.