
But he should at least know the basics about the secondary genders.
He is a dominant alpha, so that really is important. He could easily turn a beta. And he can get an omega pregnant ( happened to Josh). And he has problems with omega pheromones. So being that oblivious concerning other secondary genders is problematic.

Sadly, there is no explanation for his ignorance!
We can only speculate that his brother and family traumatised him enough for him to not want to know! Since he avoids sleeping around anyways!
And if you think about it, the c-section scar could be covered up as a wound! And him leaking well, education systems probably won’t teach anyone using that as the main distinction point! They’d probably teach them the difference in genitals! Even I didn’t know this fact until reading novels!
Apparent c section + leaking down there= definitely a beta