To be fair, Goku does get pissed when you kill his friends, I just...Well, he's never been one to talk about it. His friends saying it was just fine--I did like the little color palletes of Jiren and Goku fighting during the flashback.
And I wouldn't say /Never/ forgive them.
I'm sure Vegeta did his best to kill a few of them, and 17/18 pretty much---
Okay, let's just assume he meant "I'll be pissed, but if you turn out to be pretty decent, I'll get over it."
Which is fine, but yeah.