I think it's just the fact that it reeks of the kind of focus-grouped design language where all the edges have been rounded off so that it can't possibly be objectionable to anyone. When you pair this with poor corporate citizenship like this, it just creates a bizarre dissonance between a company which is trying to project a warm and human aesthetic, while they are mistreating users with their actual actions.

But at the end of the day, I don't think it's Corporate Memphis' fault - it just happens to be the design aesthetic which is often paired with this kind of shitty behavior which nobody likes. If somebody is constantly feeding you bitter medicine on a silver spoon every day, you might grow to hate the spoon.