Malakal, you're starting to veer into a strawman argument a bit.

the point is that the PCs are presented with problems.

If the PCs are presented with a problem and want to solve it, they should be allowed to try and solve it.

If the problem is a corrupt, oppressive regime who refuses to be reasoned with, sometimes the only way to solve that is with violence.

You seem to be both exaggerating Raz's claims into one's more simplified than the point I think she's trying to come across with, and coming up with situations that make it more complicated than it needs to be.

If you present an obvious bad guy, the PCs are going to want to fight them. It's as simple as that.

If you don't want the PCs to try and deal with social issues they encounter, either don't present social issues or make it abundantly clear that that's not what the game is about before anyone even makes a character