[pietro wasn't there for that part, so he can't really speak with any authority as to who was right or wrong. he wishes he had been there, however, if for no other reason than to give tony stark a piece of his mind.

but tony stark isn't here, and nobody will hurt wanda while pietro is alive (again). he turns his head to gently place a kiss on the top of her head.]

Many more people in Sokovia would have died if the Avengers hadn't been there to stop Ultron. Everyone in the world would have died if the Avengers hadn't stopped Ultron. [he pauses, then adopts a slightly teasing tone to ask:] You did stop Ultron, right?

[he doesn't know! he was dead, after all.]