Moving elements on screens is viewed as slick but is also a strong statement that the website knows how it is best to consume itself and depriving the user of the control over how to interact with it. I think there's been a big misunderstanding from UX designers about what features users actually value over time and too great a reliance on short window A/B UX comparisons where the cool effect of animations has not yet worn through.

This is also complicated by the fact that _all UX changes are bad_ until the users get used to them. So if you genuinely believe you're providing a better UX you do need to ignore the initial wave of negativity - which makes it difficult to tell knee-jerk reactions from genuine criticism if you're glossing over the results.