I'm not sure why that rules out the idea that people are averse to design changes. For one thing, it's just one piece of anecdata. For another, just because som

I'm not sure why that rules out the idea that people are averse to design changes. For one thing, it's just one piece of anecdata. For another, just because someone thinks Design A looks newer doesn't mean that they wouldn't prefer to keep using Design B if they were already used to it. Anyway, even if we accept that people are generally averse to changes, that doesn't imply that all criticism of a redesign should be dismissed as aversion to change.