Judging by what we saw in this chapter, Hashirama and Tobirama expressed views that are pretty much the core of their future policy. Since those two were Kages and judging their intellect overall one definitely can't classify them as geniuses of any sort, Itachi thinking like a Kage back when he was 7 doesn't seem special anymore.
Kishimoto wasn't very careful in this. He basically overhyped Itachi in one chapter, and then downgraded him back to normal.
I think you did'nt understand what kishi mean't dear.Kage level intellect does'nt means typical genius like shikaku,its the ability to reason and also wisdom at a great deal.To be a kage u need to have wisdom which itachi definately had.Its not easy to kill our own relatives for the sake of the peace and wellbeing of the village.Hizuren speech confirms that he had the same thinking when he was a kid of age 7.At this age most of the children play with toys.That time itachi's toy was the Sharingan which his same brother was able to activate at the age of 12.
And if u r talking about IQ is it suprising to see children with very high IQ at the age of toddeling even around us.
And how just after reading a single chapter u are able to determine that both kages have avg. Intellect.Its just too much early.Were just after seeing the 3rd episode u were able to determine that kakashi is a genius.Same applies for any charector who u think is genius
and after all the word genius depends upon the situation for eg during academy days sasuke was considered a genius whereas naruto a fool but what happened during the fight with zabuza.Every battle advocates for naruto's intellect but he still considered a knuklehead.