Awakening beyond three paths wasn't possible for any natural being. This was common sense across the stellar civilizations.
But humans were far behind them and thus ignorant of this basic fact.
So, while they had a lot of theories proposing the limits of divine paths, they had no 'proofs'.
It resulted in a situation where the average human thought what he saw was a limit while the higher-ups and the scientists knew they knew nothing.
The princes and princesses belonged to the latter group.
If such unsure humans came across something ridiculous, what would they think?
They'd think it was their ignorance.
So, when Varian, in the form of a merman used four divine paths, the prince initially freaked out.
"What the fuck!"
Boom! Zap!
But with a hard punch, lightning spear, mental interference, and space blast, he obediently followed the course.