They asked me for my visa to be legally in the country despite having already provided my passport as proof of identification.
They proceeded to look into my passport, didn't even see the visa, and still proceeded to check me in - which begs the question why they were asking for my visa in the first place.
I still wonder if they are trained to be immigration officers, but I'm strongly tempted to believe they are not. Something to consider before booking if you're sensitive to such discriminatory policies.