So the message is that family is more than genes?

[MAN OF SIN]

Based on Sakura and Shin's exchange this seems to be the case.

EDIT: And Sarada's statement at the end.

 

[One Way Road]

not if ur a uchiha it's not.

 

[Edo Slowpoke]

I think so

 

[Gagster]

No. The message is and always has been, NEVER TRUST AN UCHIHA.

 

[Zris]

The message is that Tobirama was always right.

Neji was always right.

special bloodlines >>> being normal

 

[NukaCola]

The message of the manga was and always will be, Tobirama was right.

 

[Venomous Cobra]

You're going to deep bro, The message is simple.

Don't go for guys who tried to murder yo ass more than once.