My daughter goes there and is from a crazy liberal town. She had the same concerns you do, and ended up going there for the same reasons you cite. She is having a relationship with someone who is non-binary. She also has Christian friends, who are socially and politically liberal and have no problem with her relationship. She has atheist friends. She has friends who party. She has friends who don’t. She has friends from other countries. It’s probably less LGBTQ-populated than Carleton, but has the advantage of not being an echo chamber of any kind. And BTW “Evangelical” Lutheran is the cool, liberal sect or whatever. Don’t let the name fool you.