I don't honestly see anything not nice in what you said (and I've learned as a Midwesterner nice is very important to me). You didn't insult anyone, there isn't

I don't honestly see anything not nice in what you said (and I've learned as a Midwesterner nice is very important to me). You didn't insult anyone, there isn't condescension dripping from the comment, you didn't trivialize anything, you didn't even throw shade. You made some direct statements without being a jerk. Sounds good to me! I think the confusion is in whether conflict-avoidance is the same as nice-ness. I certainly was brought up to mostly think that way, but now that I've spent a lot of time arguing about math I have let go of some of that training.