No that just means he found the perfect wife.
A woman that can match his absurdity and cockiness
It REALLY WAS telling how similar these two were in the beginning
Well with a wife combo of those two, the regulars at the restaurant will be entertained that's for sure.
If you think about the two, you could argue they are Sasuke and Naruto done much better, We have on one side the one whose father was very demanding, and had natural talent that is superior to their parents, and on the other side we have someone who has to work hard to achieve, someone chasing their fathers shadow, who is a genius in their chosen field.
Only difference was we see in Shokugeki then actually grow, see them getting acknowledge for their hard work, and improve as they go along. In Naruto you had to be told one is a genius and the other is a dobe every single time, Sasuke got praised because the manga told you he was a genius, and Naruto has to be underestimated because the manga told you he was a dobe.
In SnS we've seen what Erina brings to the table and where her qualities lie, and with Souma we see him struggling, planning, and testing over and over before he gets it right, and when he wins the next battle those previous wins count and he is acknowledged by his previous successes, not under-estimated.