I was recently there for a conference and it didn’t seem any different than any other Canadian city in this regard. (I met many lovely, welcoming people and had a great time).
Yeah, Alberta is a Conservative stronghold- but (maybe I am naive) cities tend to be large and diverse enough to provide a safe environment for anyone. You’ll probably find a ton of economically conservative big-business capitalist types in Calgary...but that doesn’t always mean a place is socially conservative.
Having visited, I would feel comfortable moving there for school (and I am willing to bet that the university campus isn’t much different than others, politically). That said, I am not a minority and someone who is may have a different perspective on this.