I think it could be uninteresting if their views are just exactly the same and so the scene has no conflict or purpose.
It's not their opinions being the same that's necessarily the issue, it's what the scene is trying to do.
"Murder is bad." said Bob.
"Yes, it is." agreed Alice.
Isn't a scene. You can't make a scene out of that. You may as well cut Alice as a character and just have Bob think to himself "murder is bad" as he goes off to do whatever he's doing, because Alice has no purpose in that scene.
So if your theme is "murder is bad" and you want to make a story out of it, and your cast are all decent people who agree that murder is bad, then their differences in opinion need to be on why murder is bad, and what should be done with murderers, or what should be done to prevent it.
Because let's say there's a murderer on the loose. Bob and Alice both want to stop the murderer, but, Bob wants to stop the murderer because he believes that life is sacred and that to kill a human being, created in God's image is a sin against God, and so he also is vehemently against the death penalty on religious grounds. This murderer must be apprehended without killing them, as a matter of holy retribution, and to protect all the innocent people of the world! And Alice also believes murder is wrong, but it's not because she thinks killing is wrong, she believes sometimes there's a good reason to kill somebody, like if you have been given the authority to do so as a soldier or secret agent, and that that doesn't count as murder, so she thinks it's her duty to kill the murderer on behalf of her country in order to maintain the rule of law and the authority of the government.
Now you have a more interesting scene, where Bob and Alice do both have an opinion about the theme, but what they think about the theme, and how they think they should go about interacting with the theme are so different that they will inevitably either debate or cause problems for each other.
Now you have a scene that goes more like:
"We have to catch the murderer," said Bob, "murder is wrong!"
"Yeah," agreed Alice, "he's going to taste the wrong end of my gun."
"What? You must be joking, right, we can't just kill him!"
"Well we can't just let him go around free, can we? Better to put him in the ground."
"But- but that's murder!"
"No." said Alice, checking her clips, "it's justice."
And so on. There's a debate now, and two different perspectives on the theme to help you explore the theme, and what exactly murder is.
